csupport.txt                  C/C++ Support                  March 22 2014

C/C++ Support                                           c-support csupport
                             Plugin version 6.1.1
                        for Vim version 7.0 and above
                       Fritz Mehner  <mehner.fritz@web.de>

C/C++-IDE for Vim/gVim. It is written to considerably speed up writing code in
a consistent style.  This is done by inserting complete statements,idioms,
code snippets, templates, and comments.  Syntax checking, compiling,  running
a program, running a code checker or a reformatter can be done with a

++  The plug-in version 6.0+ is a rewriting of version 5.19+.               ++
++  The versions 5.0+ are based on a new and more powerful template system  ++
++  (please see  |template-support| for more information).                    ++
++  The template syntax has changed!                                        ++

 1.    Usage                                    |csupport-usage-gvim|
 1.1    Menu 'Comments'                         |csupport-comm|
 1.1.1   Append aligned comments                |csupport-comm-aligned|
 1.1.2   Adjust end-of-line comments            |csupport-comm-realign|
 1.1.3   Code to comment                        |csupport-code-to-comm|
 1.1.4   Comment to code                        |csupport-comm-to-code|
 1.1.5   Toggle non-C comments                  |csupport-comm-non-c|
 1.1.6   Frame comments, file header, ...       |csupport-comm-frame|
 1.1.7   File section comments         ..       |csupport-comm-sections|
 1.1.8   Keyword comment, special comment       |csupport-comm-keyword|
 1.1.9   Macros                                 |csupport-comm-macros|
 1.1.10  Date and date+time                     |csupport-comm-date|
 1.1.11  C to C++ comments and vice versa       |csupport-comm-c-cpp|
 1.2    Menu 'Statements'                       |csupport-stat|
 1.2.1   Normal mode, insert mode.              |csupport-stat-normal-mode|
 1.2.2   Visual mode.                           |csupport-stat-visual-mode|
 1.3    Menu 'Preprocessor'                     |csupport-prep|
 1.3.1   Normal mode, insert mode.              |csupport-prep-normal-mode|
 1.3.2   Visual mode.                           |csupport-prep-visual-mode|
 1.3.3   Block out code with #if 0 .. #endif    |csupport-prep-if0|
 1.4    Menu 'Idioms'                           |csupport-idioms|
 1.4.1   Item 'function'                        |csupport-idioms-function|
 1.4.2   for-loop control                       |csupport-idioms-for-loop|
 1.4.3   Item 'open input file'                 |csupport-idioms-input|
 1.4.4   Item 'open output file'                |csupport-idioms-output|
 1.5    Menu 'Snippets'                         |csupport-snippets|
 1.5.1   Code snippets                          |csupport-snippets|
 1.5.2   Picking up prototypes                  |csupport-proto|
 1.5.3   Code templates                         |csupport-templates-menu|
 1.6    Menu 'C++'                              |csupport-c++|
 1.6.1   Normal mode, insert mode.              |csupport-c++-normal-mode|
 1.6.2   Visual mode.                           |csupport-c++-visual-mode|
 1.6.3   Implementation                         |csupport-c++-impl|
 1.7    Menu 'Run'                              |csupport-run|
 1.7.1   Compile, link, run                     |csupport-run-buffer|
 1.7.2   Command line arguments                 |csupport-run-cmdline-args|
 1.7.3   Executable to run                      |csupport-run-make-run|
 1.7.4   Run debugger                           |csupport-run-debugger|
 1.7.5   Splint                                 |csupport-run-splint|
 1.7.6   Cppcheck                               |csupport-run-cppcheck|
 1.7.7   CodeCheck                              |csupport-run-codecheck|
 1.7.8   Indent                                 |csupport-run-indent|
 1.7.9   Hardcopy                               |csupport-run-hardcopy|
 1.7.10  Xterm size                             |csupport-run-xterm|
 1.7.11  Output redirection                     |csupport-run-output|
 1.8     Tool Box                               |csupport-toolbox|
 1.8.1    Make                                  |csupport-toolbox-make|
 1.8.2    Other Tools                           |csupport-toolbox-others|
 1.9    Menu 'Help'                             |csupport-help|
 1.10   Menu 'Doxygen'                          |csupport-doxygen|
 1.10.1  Enabling the menu                      |csupport-doxygen-enable|

 2.    Usage without GUI                        |csupport-usage-vim|
 3.    Hotkeys                                  |csupport-hotkeys|
 4.    Customization and configuration          |csupport-custom|
 4.1    Global variables                        |csupport-custom-glob-vars|
 4.2     The root menu                          |csupport-custom-root|
 4.3     System-wide installation               |csupport-system-wide|
 5.    Template files and tags                  |csupport-templates|
 5.1    Template files                          |csupport-templates-files|
 5.2    Macros                                  |csupport-templates-macros|
 5.2.1  User defined formats for date and time  |csupport-templates-date|
 5.3    Templates                               |csupport-templates-names|
 5.3.1  Template definition                     |csupport-templates-definition|
 5.3.2  The jump tags <+text+> etc.             |csupport-templates-jumptags|
 5.3.3  Command Ctrl-j                          |csupport-Ctrl-j|
 5.5    Binding a style to a file extension     |csupport-templates-bind|
 6.    C/C++ Dictionaries                       |csupport-dictionary|
 7.    Extend ctags                             |csupport-ctags|
 7.1   Make and qmake                           |csupport-ctags-make|
 7.2   Templates                                |csupport-ctags-templates|
 8.    Folding                                  |csupport-folding|
 9     Additional Mappings                      |csupport-ad-mappings|
 10.   Windows particularities                  |csupport-windows|
 11.   Additional tips                          |csupport-tips|
 12.   Troubleshooting                          |csupport-troubleshooting|
 13.   Release Notes /Change Log                |csupport-release-notes|

      How to add this help file to Vim's help  |add-local-help|

1.  USAGE WITH GUI  (gVim)                               csupport-usage-gvim

If the root menu 'C/C++' is not visible call it with the item "Load C Support"
from the standard Tools-menu.
The item "Load C Support" can also be used to unload the C/C++-root menu.

Nearly all menu entries insert code snippets or comments. All of these are
contained within template files and can be changed by the user to meet their
requirements (see|csupport-templates|).

1.1  MENU 'Comments'                                           csupport-comm


In NORMAL MODE, the menu item 'end-of-line comment' will append a comment to
the current line.
In VISUAL MODE, this item will append aligned comments to all marked lines.
Marking the first 4 lines

  print_double_array ( double array[],
                       int    n,
                       int    columns,
                       char*  arrayname

and choosing 'end-of-line comment' will yield

  print_double_array ( double array[],          /*  */
                       int    n,                /*  */
                       int    columns,          /*  */
                       char*  arrayname         /*  */

If one or more lines go beyond the starting column (s.below), the comments
will start at the second column after the longest line.  The cursor will then
be positioned inside the first comment.

The default starting column is 49 ( = (multiple of 2,4, or 8) + 1 ).  This can
be changed by setting a global variable in the file ~/.vimrc , e.g. :

  let g:C_LineEndCommColDefault    = 45

The starting column can also be set by the menu item 'Comments->set
end-of-line com. col'.  Just position the cursor in an arbitrary column
(column number is shown in the Vim status line) and choose this menu item.
This setting is buffer related.
If the cursor was at the end of a line you will be asked for a column number
because this position is most likely not the desired starting column.  Your
choice will be confirmed.

1.1.2  ADJUST END-OF-LINE COMMENTS                    csupport-comm-realign

After some changes end-of-line comments may be no longer aligned:

  print_double_array ( double       array[],          /*  */
                       long int     n,                     /*  */
                       unsigned int columns,          /*  */
                       char*        a_name         /*  */

Realignment can be achieved with the menu item 'adjust end-of-line com.' In
normal mode the comment (if any) in the current line will be aligned to the
end-of-line comment column (see above) if possible. In visual mode the
comments in the marked block will be aligned:

  print_double_array ( double       array[],    /*  */
                       long int     n,          /*  */
                       unsigned int columns,    /*  */
                       char*        a_name      /*  */

The realignment will not be done for comments with nothing else than leading
whitespaces. These comments are usually captions:

  max = other.max;                    /* the maximum value */
  len = other.len;                         /* the length        */
  /* ===== the next section ===== */
  pos = (x+y+z)/3.0;             /* the next position */

After the alignment we have:

  max = other.max;                              /* the maximum value */
  len = other.len;                              /* the length        */
  /* ===== the next section ===== */
  pos = (x+y+z)/3.0;                            /* the next position */

1.1.3  CODE TO COMMENT                                 csupport-code-to-comm

The marked block


will be changed by the menu item 'code->comment /**/' into the multiline
comment (all (partially) marked lines):

 /* xxxxxxxx
  * xxxxxxxx
  * xxxxxxxx

The marked block will be changed  by the menu item 'code->comment //' into the
multiline comment


The menu items works also for a single line. A single line needs not to be

1.1.4  COMMENT TO CODE                                 csupport-comm-to-code

If one (or more) complete comment (i.e. all lines belonging to the comment) is
marked the item 'comment->code' will uncomment it.  If the following lines
are marked

   * printf ("\n");

  printf ("\n");

  //  printf ("\n");

   *  printf ("\n");

uncommenting will yield

   * printf ("\n");

  printf ("\n");

  printf ("\n");

  printf ("\n");

The first 2 lines are only a part of a C-comment and remain unchanged.
A C-comment can start with /* , /** or /*! .

The menu item works also for a single line with a leading // . A single line
needs not to be marked.

1.1.5  TOGGLE NON-C COMMENTS                             csupport-comm-non-c

This menu item toggles the non-C comment for a single line or a marked range
of lines for embedded non-C code. The default comment uses the hash characters
'#'. The non-C comment can start with any string.  You can change the default
by setting a global variable in '~/.vimrc':

 let g:C_NonCComment  = '^^'

1.1.6  FRAME COMMENTS, FILE HEADER, ...                  csupport-comm-frame

Frame comments, file header comments and function, methods, class descriptions
are read as templates from the appropriate files (see |csupport-templates|).

There are two file description templates (menu items 'file description impl'
and  'file description header', see also |csupport-templates|):

  implementation  : files .c .cc .cp .cxx .cpp .CPP *.c++
                                      .C .i *.ii

  header          : everything else with filetype 'c' or 'cpp'

The appropriate template will also be included into a new file. The plugin
decides on the basis of the file extension. The default is shown above. You
can change the list by setting a global variable in '~/.vimrc':

  autocmd BufRead,BufNewFile  *.XYZ  set filetype=c

  let g:C_SourceCodeExtensions  = 'XYZ c cc cp cxx cpp CPP c++ C i ii'

A new file named 'test.XYZ' will now be considered a C implementation file.

1.1.7  FILE SECTION COMMENTS                          csupport-comm-sections

File section comments can be uses to separate typical C- and H-file sections
with comments of similar appearance, e.g.

 /* #####   HEADER FILE INCLUDES   ################################################### */

 /* #####   MACROS  -  LOCAL TO THIS SOURCE FILE   ################################### */

 /* #####   TYPE DEFINITIONS  -  LOCAL TO THIS SOURCE FILE   ######################### */

These section comments can also be inserted using the hotkey \ccs for C/C++
files, or \chs for H-files.

1.1.8  KEYWORD COMMENT, SPECIAL COMMENT                csupport-comm-keyword

Keword comments are end-of-line comments:

 /* :<keyword>:<date+time>:<author reference>: <arbitrary comment text> */
Keywords are


These are preliminary comments to document places where work will be resumed
shortly. They are usually not meant for the final documentation.  These
comments are easily found by searching for the keyword.
The keyword comments can also be inserted using the hotkey \ckc .

Special comments are occasionally used to mark special features of a code
construct (e.g. a fall through cases in a switch statement, an empty loop):

 /* EMPTY */

The special comments can also be inserted using the hotkey \csc .

1.1.9  MACROS (PLUGIN)                                  csupport-comm-macros

The submenu 'macros' let you insert the predefined macros from the template
system (see|csupport-templates-macros|).

1.1.10  DATE AND DATE+TIME                                csupport-comm-date

The format for 'date' and 'date time' can be defined by the user (see

1.1.11 C TO C++ COMMENTS AND VICE VERSA                  csupport-comm-c-cpp

The menu item '/* xxx */ <-> // xxx' changes a C++ comment into a C comment
and a C++ comment into a C comment (toggle).
This is done for the current line in normal or insert mode and for a marked
area of lines in visual mode.
The hotkey \cx does the same. It can be used with a range:
changes the current line and the next 2 lines.

1.2  MENU 'Statements'                                         csupport-stat

1.2.1  NORMAL MODE, INSERT MODE.                   csupport-stat-normal-mode

An empty statement will be inserted and properly indented. The item 'if block'
will insert an if-statement:

 if (  ) {

1.2.2  VISUAL MODE.                                csupport-stat-visual-mode


The highlighted area


can be surrounded by one of the following statements:

  |     if (  )                |     if (  )                 |
  |     {                      |     {                       |
  |       xxxxx                |       xxxxx                 |
  |       xxxxx                |       xxxxx                 |
  |     }                      |     }                       |
  |                            |     else                    |
  |                            |     {                       |
  |                            |     }                       |
  |     for ( ; ;  )           |     while (  )              |
  |     {                      |     {                       |
  |       xxxxx                |       xxxxx                 |
  |       xxxxx                |       xxxxx                 |
  |     }                      |     }                       |
  |     do                     |                             |
  |     {                      |     {                       |
  |       xxxxx                |       xxxxx                 |
  |       xxxxx                |       xxxxx                 |
  |     }                      |     }                       |
  |     while (  );            |                             |
  |      switch (  ) {                                       |
  |      case :                                              |
  |       break;                                             |
  |                                                          |
  |      case :                                              |
  |       break;                                             |
  |                                                          |
  |      case :                                              |
  |       break;                                             |
  |                                                          |
  |      case :                                              |
  |       break;                                             |
  |                                                          |
  |      default:                                            |
  |       break;                                             |
  |      }                                                   |

The whole statement will be indented after insertion.


One of the following statements can be inserted:

  |    if (  )                    |    for ( ; ;  )          |
  |    if (  )                    |    while (  )            |
  |    else                       |                          |
  |    case :                     |                          |
  |      break;                   |                          |

1.3  MENU 'Preprocessor'                                       csupport-prep

1.3.1  NORMAL MODE, INSERT MODE.                   csupport-prep-normal-mode

The preprocessor statements will be inserted and properly indented.

1.3.2  VISUAL MODE.                                csupport-prep-visual-mode


The highlighted area


can be surrounded by one of the following statements:

  |    #if  CONDITION                                        |
  |    xxxxx                                                 |
  |    xxxxx                                                 |
  |    #else      /* ----- #if CONDITION  ----- */           |
  |                                                          |
  |    #endif     /* ----- #if CONDITION  ----- */           |
  |    #ifdef  CONDITION                                     |
  |    xxxxx                                                 |
  |    xxxxx                                                 |
  |    #else      /* ----- #ifdef CONDITION  ----- */        |
  |                                                          |
  |    #endif     /* ----- #ifdef CONDITION  ----- */        |
  |    #ifndef  CONDITION                                    |
  |    xxxxx                                                 |
  |    xxxxx                                                 |
  |    #else      /* ----- #ifndef CONDITION  ----- */       |
  |                                                          |
  |    #endif     /* ----- #ifndef CONDITION  ----- */       |
  |    #ifndef  INC_TEST                                     |
  |    #define  INC_TEST                                     |
  |    xxxxx                                                 |
  |    xxxxx                                                 |
  |    #endif   /* ----- #ifndef INC_TEST  ----- */          |
  |    #if  0     /* ----- #if 0 : If0Label_1 ----- */       |
  |                                                          |
  |    #endif     /* ----- #if 0 : If0Label_1 ----- */       |

The macro name for an include guard (e.g. INC_TEST above) will be derived as a
suggestion from the file name.

1.3.3  BLOCK OUT CODE WITH #if 0 ... #endif                csupport-prep-if0

The menu item #if 0 #endif  inserts the lines

  #if  0     /* ----- #if 0 : If0Label_1 ----- */

  #endif     /* ----- #if 0 : If0Label_1 ----- */

In visual mode the marked block of lines will be surrounded by these lines.

This is usually done to temporarily block out some code.  The label names like
If0Label_1 are automatically inserted into the comments.  The trailing numbers
are automatically incremented.  These numbers can be changed by the user.  The
next number will be one above the highest number found in the current buffer.

A corresponding label can be found by searching with the vim star command (*).
All labels can be found with a global search like :g/If0Label_/ or
:g/If0Label_\d\+/. All corresponding lines can be deleted with :g/If0Label_/d .


The menu item 'remove #if #endif' removes such a construct if the cursor is
in the middle of such a section or on one of the two enclosing lines. Nested
constructs will be untouched.

1.4  MENU 'Idioms'                                           csupport-idioms

1.4.1  Item 'function'                              csupport-idioms-function

The name of the function is asked for and the following lines (for function
name "f") will be inserted:

 f ( <+argument_list+> )
  return <+return_value+>;
 }   /* -----  end of function f  ----- */

Main or function: the highlighted lines will go inside the new function or
for-loops: the highlighted lines will be set in braces.

1.4.2  for-loop control                             csupport-idioms-for-loop

The menu items 'for( x=0; ... )' and 'for( x=n-1; ... )' can be used to write
the control statement for a for-loop counting upward or downward. These items
start an input dialog

 [TYPE (expand)] VARIABLE [START [END [INCR.]]] :

asking for at least the name of the loop variable. The other parameters are
optional. The type is restricted to the following integral data types:

  long int
  long long
  long long int
  short int
  unsigned char
  unsigned int
  unsigned long
  unsigned long int
  unsigned long long
  unsigned long long int
  unsigned short
  unsigned short int

One of these types can be specified by typing it completely or by typing zero
or more characters of its name and completing them to the full name by using
the tab key (tab completion). If the start of the type name is ambiguous (e.g.
'uns') a list of completion candidates is provided to choose from.

1.4.3  Item 'open input file'                          csupport-idioms-input

The item 'open input file' will create the statements to open and close an
input file (e.g. with the file pointer 'infile').

1.4.4  Item 'open output file'                        csupport-idioms-output

The item 'open output file' will create the statements to open and close an
output file (e.g. with the file pointer 'outfile').

1.5  MENU 'Snippets'                                       csupport-snippets


Code snippets are pieces of code which are kept in separate files in a special
directory (e.g. a few lines of code or a complete template for a Makefile).
File names are used to identify the snippets.  The snippet directory will be
created during the installation  ( $HOME/.vim/codesnippets-c is the default).
Snippets are managed with the 4 items

   C/C++ -> Snippets -> read  code snippet
   C/C++ -> Snippets -> view  code snippet
   C/C++ -> Snippets -> write code snippet
   C/C++ -> Snippets -> edit  code snippet

from the Snippets submenu.

When nothing is marked, "write code snippet" will write the whole buffer
to a snippet file, otherwise the marked area will be written to a file.

Select the appropriate file from the snippet directory ("read  code snippet").
The inserted lines will be indented.

This is a normal edit.

Show file in a read-only buffer.

Code snippets are normally indented after insertion. To suppress indentation
add the file extension "ni" or "noindent" to the snippet file name, e.g.


Snippet browser

Under a GUI a file requester will be put up. Without GUI the filename will be
read from the command line. You can change this behavior by setting a global
variable in your ~/.vimrc :

 let g:C_GuiSnippetBrowser = 'commandline'

The default value is 'gui'.

1.5.2   PICKING UP PROTOTYPES                                 csupport-proto

PICK UP FUNCTION PROTOTYPES (key mappings \np, \nf).

To make a prototype from a function head mark the function head and choose
'Snippets -> pick up funct. prototype'. From the first six lines of

  print_double_array (  double array[],  /* array to print                */
                        int    n,        /* number of elements to print   */
                        int    columns,  /* number of elements per column */
                        char*  arrayname /* array name                    */
  }       /* ----------  end of function print_double_array  ---------- */

the prototype

  void print_double_array ( double array[], int n, int columns, char* arrayname );

is produced and put in an internal buffer.
- Leading and trailing whitespaces are removed.
- All inner whitespaces are squeezed.
- All comments will be discarded.
- Trailing parts of the function body (e.g a '{' ) will also be removed.
- The class name and the scope resolution operator will be removed (C++ method
Further prototypes can be picked up and gathered in the buffer.

PICK UP METHOD PROTOTYPES (key mapping \nm).

For C++ methods the menu item 'Snippets -> pick up method prototype' should be
used.  Namespace names and class names will be removed (exception: 'std::' ).
The first two lines of

  ROBOT::Robot::get_name  ( void )
    return type_name;
  }   /* -----  end of method Robot::get_name  ----- */

result in the prototype

  std::string get_name ( void );

The 3 lines

  template <class T>
  const Stack<T>&
  Stack<T>::operator = ( const Stack &other )

result in the prototype

  const Stack& operator = ( const Stack &other );

Folding may help picking up prototypes (see |csupport-folding|).

With 'Snippets -> insert prototype(s)' all picked up prototypes currently in
the buffer will be inserted below the cursor.
The prototype buffer will be cleared after insertion.

The prototype buffer can be cleared with 'Snippets -> clear prototype(s)' .

The list of gathered prototypes can be shown with
'Snippets -> show prototype(s)'. The number and the filename are shown, e.g.

  (1) matrix.c #  double** calloc_double_matrix ( int rows, int columns );
  (2) matrix.c #  void free_double_matrix ( double **m );
  (3) foomain.c #  void foo ( );

REMARK. Generating prototypes this way is nice in a small project. You may
want to use an extractor like cextract or something else.

1.5.3  Code Templates                                csupport-templates-menu

Nearly all menu entries insert code snippets or comments. All these stuff is
taken from template files and can be changed by the user to meet his
requirements (see|csupport-templates|on how to use the template system).

The menu item 'edit local templates' opens the main template file in a local
plugin installation. This is usually the file
'~/.vim/c-support/templates/Templates'.  There may be dependent files
loaded from the main file.  Now change whatever file you want, save it, and
click on the menu item 'reread templates' to read in the file(s) and to
rebuild the internal representation of the templates.

Template browser

Under a GUI a file requester will be put up. Without GUI the filename will be
read from the command line. You can change this behavior by setting a global
variable in your ~/.vimrc :

 let g:C_GuiTemplateBrowser = 'explorer'

The default value is 'gui'. 'explorer' will start the file explorer
(see help|:Explore|). To use the commandline asign 'commandline'.

Template Style

The template system supports different template styles. If there are more than
one style the menu item 'choose style' let you choose a style on the fly.

Template Jump Tags

You can use different jump tags in a template, e.g. {-tagname-}. The allowed
tags can be chosen from this menu.(see|csupport-templates-jumptags|)

1.6  MENU 'C++'                                                 csupport-c++

1.6.1  NORMAL MODE, INSERT MODE.                    csupport-c++-normal-mode

An empty statement will be inserted and in some cases properly indented. The
item 'try catch' will insert the following lines:

  try {
  catch ( const &ExceptObj ) {    // handle exception:
  catch (...) {   // handle exception: unspecified

The cursor will go into the try block.

1.6.2  VISUAL MODE.                                 csupport-c++-visual-mode

The highlighted area can be surrounded by one of the following statements:

  try catch
  catch all
  extern C
  namespace block xxx

The whole statement will be indented after insertion.

1.6.3   IMPLEMENTATION                              csupport-c++-impl

The menu item 'method implement.' asks for a method name. If this item is
called the first time you will see just an scope resolution operator.  If you
specify the scope this is used the next time you call this item.  If you use
one of the menu items to generate a class (see |csupport-templates|) the
scope will be extracted and used for the next method.

1.7  MENU 'Run'                                                 csupport-run

1.7.1  COMPILE, LINK, RUN                                csupport-run-buffer

The 'Run' menu provides a minimal make functionality for single file projects
(e.g. in education) :

'save and compile' saves the buffer and run the compiler with the given
options (see |csupport-custom-glob-vars|).

An error window will be opened if the compiler reports errors and/or warnings.
Quickfix commands can now be used to jump to an error location.

Consider using maps like

  map  <silent> <F7>    <Esc>:cprevious<CR>
  map  <silent> <F8>    <Esc>:cnext<CR>

in your ~/.vimrc file to jump over the error locations and make navigation
easier.  The error list and the error locations in your source buffer will be

The filename extension for an object file can be set in ~.vimrc :

  let g:C_ObjExtension = '.obj'

The default is '.o' ('.obj' for Windows).

'link' makes an executable from the current buffer. If the buffer is not
saved, or no object is available or the object is older then the source step
'save and compile' is executed first.
The linkging will only be tried if the current buffer contains a main

The behavior of the compiler / linker is determined by the options assigned to
the variables described in |csupport-custom-glob-vars| (4.group).

Note: The source is first compiled using the settings g:C_CFlags and then
  linked using g:C_LFlags. Every time one setting is changed, the other has to
  be changed accordingly. The flags in g:C_CFlags have to cause compilation
  only. The same holds for g:C_CplusCFlags and g:C_CplusLFlags.

'run' runs the executable with the same name  as the current buffer. If the
buffer is not saved, or no executable is available or the executable is older
then the source steps 'save and compile' and 'link' are executed first.

The filename extension for an executable can be set in ~.vimrc :

  let g:C_ExeExtension = '.exe'

The default is the empty string.

1.7.2  COMMAND LINE ARGUMENTS                      csupport-run-cmdline-args

The item 'command line arguments' calls an input dialog which asks for command
line arguments. These arguments are forwarded to the program which is run by
the 'run' item. The arguments are kept until you change them.  Tab expansion
can be used for filenames and directory names. The input will also be kept in
the internal history. The ex command

  :CCmdlineArgs ...

can also be used to set the command line arguments.

The arguments belong to the current buffer (that is, each buffer can have its
own arguments).  If the buffer gets a new name with "save as" the arguments
will now belong to the buffer with the new name.

The command line arguments can be followed by pipes and redirections:

  11 22 | sort -rn | head -10 > out

1.7.3  EXECUTABLE TO RUN                               csupport-run-make-run

The item 'executable to run' asks for the name of the executable built by
make.  If the name given is nonempty this executable will be run by the menu
item 'run' (\rr, C-F9).
To return to the default behavior (see |csupport-run-buffer|) remove the name
with the another 'executable to run'.

1.7.4  RUN DEBUGGER                                    csupport-run-debugger

Start a debugger from the menu item Run->'run debugger', with hotkey \rd. One of
three debuggers can be started. The preference can be set with the variable
g:C_Debugger (possible values: 'gdb', 'kdbg', 'ddd' ). The default is 'gdb').

(1) gdb
The program will be run as 'gdb  executable arguments' in an xterm.

(2) kdbg
The debugger kdbg will be started as an independent process.

(3) ddd
The data display debugger ddd is a graphical front end for gdb. It will be
started as an independent process.  The debugger ddd is not available under

If the executable to run was specified via Run->'executable to run' than this
executable will be used for debugging. If no executable was specified yet you
will be asked.

1.7.5  SPLINT                                            csupport-run-splint

Splint is a tool for statically checking C programs (see http://www.splint.org).
Of course it has to be installed in order to be used within Vim.  The menu
item 'Run->splint' will run the current buffer through splint.

An error window will be opened if splint has something to complain about.
Quickfix commands can now be used to jump to an error location.  For easier
navigation see tip under 'SAVE AND COMPILE' |csupport-run-buffer|.

Splint has many options. Presumably the best way is to keep the options in an
option file (~/.splintrc). For a quick try you can use the menu item
'Run->cmd. line arg. for splint' to specify some buffer related options.

When vim is started this plugin will check whether splint is executable. If
not, the menu item will *NOT' be visible.

1.7.6  CPPCHECK                                         csupport-run-cppcheck

Cppcheck (http://sourceforge.net/apps/mediawiki/cppcheck/) is tool for static
C++ code analysis. Cppcheck only detects the types of bugs that the compilers
normally fail to detect.

An error window will be opened if cppcheck has something to complain about.
Quickfix commands can now be used to jump to an error location.  For easier
navigation see tip under 'SAVE AND COMPILE' |csupport-run-buffer|.  Cppcheck
has many options. Predefined groups of checks can be enabled by the menu item
'cppcheck severity'.  The ex command

  :CppcheckSeverity ...

can also be used to set the severity for cppcheck.  Please see the original
documentation for more information.

1.7.7  CODECHECK                                      csupport-run-codecheck

CodeCheck (TM) is a commercial code analyzing tool produced by Abraxas
Software, Inc.  (www.abraxas-software.com).
Of course it has to be installed in order to be used within Vim.  The menu
item 'Run->CodeCheck' will run the current buffer through CodeCheck.

An error window will be opened if CodeCheck has something to complain about.
Quickfix commands can now be used to jump to an error location.  For easier
navigation see tip under 'SAVE AND COMPILE' |csupport-run-buffer|.

CodeCheck has many options.  For a quick try you can use the menu item
'Run->cmd. line arg. for CodeCheck' to specify some buffer related options.

CodeCheck will be run with default options (see |csupport-custom-glob-vars|).
The default options can be overwritten by  placing a global variable in
~/.vimrc , e.g.

  let  g:C_CodeCheckOptions = "-K13 -Rmeyers"

The default name for the executable is 'check'.  There are other names in use
on different platforms.  The name can be changed by placing a global variable
in ~/.vimrc , e.g.

  let  g:C_CodeCheckExeName = "chknt.exe"

When vim is started this plugin will check whether CodeCheck is executable. If
not, the menu item will *NOT' be visible.

1.7.8  INDENT                                           csupport-run-indent

The formatter 'indent' can be run over the whole buffer.  Before formatting a
buffer this buffer will be saved to disk and you will be asked for a

Indent has many options. These are kept in the file '.indent.pro' in your home
directory. See the indent manual for more information.

1.7.9  HARDCOPY                                       csupport-run-hardcopy

Generates a PostScript file from the whole buffer or from a marked region.
On a Windows system a printer dialog is displayed.
The hardcopy goes to the current working directory.  If the buffer contains
documentation or other material from non-writable directories the hardcopy
goes to the HOME directory. The output destination will be shown in a message.

The print header contains date and time for the current locale. The definition
used is

  let s:C_Printheader = "%<%f%h%m%<  %=%{strftime('%x %X')}     Page %N"

The current locale can be overwritten by changing the language, e.g.

  :language C

or by setting a global variable in the file ~/.vimrc , e.g. :

  let g:C_Printheader = "%<%f%h%m%<  %=%{strftime('%x %X')}     SEITE %N"

See :h printheader and :h strftime()  for more details.

1.7.10  XTERM SIZE                                        csupport-run-xterm

The size of the xterm used for  running a program (below) can be set by this
menu item. The default is 80 columns with 24 lines.
This feature is not available under Windows.

1.7.11  OUTPUT REDIRECTION                               csupport-run-output

Running a program can be done in one of three ways:
(1) Run the program from the gVim command line.
    This is for interactive programs with little input and output.
(2) Run the program and direct the output into a window with name "C-Output".
    The buffer and its content will disappear when the window is closed and
    reused otherwise.
    This is for non-interactive programs with little to very much output.
    You have unlimited line length, regex search, navigation, ...
    The tabstop value will be set to 8  for "C-Output".
(3) Run the program in an xterm.

The output method can be chosen from the menu item 'Run->output: ...'.
This menu has three states:

  output: VIM->buffer->xterm
  output: BUFFER->xterm->vim
  output: XTERM->vim->buffer

The first (uppercase) item shows the current method.  The default is 'vim'.
This can be changed by setting the variable g:C_OutputGvim to another value.
Possible values are 'vim', 'buffer' and 'xterm' .

The xterm defaults can be set in ~/.vimrc by the variable g:C_XtermDefaults .
The default is "-fa courier -fs 12 -geometry 80x24" :
  font name     : -fa courier
  font size     : -fs 12
  terminal size : -geometry 80x24
See 'xterm -help' for more options. Xterms are not available under Windows.

1.8  MENU 'Tool Box'                                        csupport-toolbox

Tools which can be used by several plugins are located in the Tool Box.
Examples are tools for make(1) or doxygen. The Tool Box has its own
To switch the Tool Box off add the following line to the file .vimrc

  let g:C_UseToolbox     = 'no'

1.8.1 Make                                            csupport-toolbox-make

The tool box for make provides a small set hotkeys, menu items, and ex commands
for controlling make. Please see|toolbox-make|.
To switch the make tool box off add the following line to the file .vimrc

  let g:C_UseTool_make  = 'no'

The hotkeys for the make tool are defined in the file ~/.vim/ftplugin/c.vim .

1.8.2 Other Tools                                   csupport-toolbox-others

In general, to enable a tool called <name>, add the following line to your

  let g:C_UseTool_<name> = 'yes'

For example:

  let g:C_UseTool_cmake   = 'yes'
  let g:C_UseTool_doxygen = 'yes'

1.9  MENU 'Help'                                               csupport-help

Plugin help

The menu item 'help (plugin)' shows this plugin help in a help window. The
help tags must have been generated with

  :helptags ~/.vim/doc

The hotkey is \hp (for "help plugin").

Displaying a manual

The menu item 'show manual' shows the manual for the word under the cursor. If
there is more than one manual a selection list will be presented. If there is
no word under the cursor you can type in a name. An interface to the on-line
reference manuals must be installed (usually man(1) for Linux/Unix, see
|csupport-custom-glob-vars|). The hotkey is \hm (for "help manual").

English dictionary

The menu item 'english' opens an online dictionary for the word under the

Doxygen reference

The menu item 'doxygen cmd' opens the online reference for the Doxygen command
under the cursor.

Under Windows, the browser for opening the online documentation has to be
configured. To set the executable, the template library has to be modified.
In case of a local installation (the default), choose:
  C/C++ -> Snippets -> edit local templates
and for a global installation:
  C/C++ -> Snippets -> edit global templates
Open the main template file 'Templates' and uncomment the line
 §SetMacro( 'HELP_BROWSER', '"C:\Program Files\Mozilla Firefox\firefox.exe"' )
by removing the leading '§'
 SetMacro( 'HELP_BROWSER', '"C:\Program Files\Mozilla Firefox\firefox.exe"' )
Then set the right executable. Mind the double quotes which escape the name of
the executable.
Finally, reread the template library using:
  C/C++ -> Snippets -> reread templates

1.10  MENU 'Doxygen'                                        csupport-doxygen

A menu 'Doxygen' with templates for writing Doxygen comments can optionally be
included. It contains two kinds of entries. If the name includes a "block",
the template inserts a whole Doxygen comment block. Other templates insert a
line extending an existing block.

The special entry 'brief, after member' can be used to append a brief
description after a member. Similarly to 'Comments->end-of-line comment', it
will append the comment to several lines when in visual mode. When marking the
four lines within the enum

  enum Color
  };   // -----  end of enum Color  -----

and then choosing 'brief, after member', the result will look like this

  enum Color
    Background,                                 /!< \brief  /
    Transparent,                                /!< \brief  /
    Black,                                      /!< \brief  /
    White,                                      /!< \brief  /
  };   // -----  end of enum Color  -----

Now the elements can be documented one by one.
This feature works like 'Comments->end-of-line comment' in every other aspect.
The comments can be aligned using 'Comments->adjust end-of-line com.' and
respect the column set by 'Comments->set end-of-line com. col' (see

1.10.1  ENABLING THE MENU                            csupport-doxygen-enable

The 'Doxygen' submenu is disabled by default. To enable it, the template
library has to be modified. In case of a local installation (the default),
  C/C++ -> Snippets -> edit local templates
and for a global installation:
  C/C++ -> Snippets -> edit global templates
Open the main template file 'Templates' and uncomment the line
  §IncludeFile( 'doxygen.template' )
by removing the leading '§'
  IncludeFile( 'doxygen.template' )
After a restart of the editor, the 'Doxygen' menu will appear.

2.  USAGE WITHOUT GUI  (Vim)                              csupport-usage-vim

The frequently used constructs can be inserted with key mappings.  The
mappings are also described in the document c-hot-keys.pdf (reference card,
part of this package).
Hint: Typing speed matters. The combination of a leader ('\') and the
following character(s) will only be recognized for a short time.
Some mappings can be used with range (of lines). In normal mode


appends a end-of-line comment to the current line,  whereas


appends end-of-line comments to the 4 lines starting with the current line.

Legend:  (i) insert mode, (n) normal mode, (v) visual mode
         [n] range

  -- Help ---------------------------------------------------------------

     \he       open an English dictionary for the    (n,i)
               word under the cursor
     \hd       open the reference for the Doxygen    (n,i)
               command under the cursor
     \hm       show manual for word under the cursor (n,i)
     \hp       show plugin help                      (n,i)

  -- Comments -----------------------------------------------------------

  [n]\cl       end-of-line comment                 (n,v,i)
  [n]\cj       adjust end-of-line comment(s)       (n,v,i)
     \cs       set end-of-line comment column      (n)
  [n]\c*       code -> comment /* */               (n,v,i)
  [n]\cc       code -> comment //                  (n,v,i)
  [n]\co       comment -> code                     (n,v,i)
  [n]\cn       toggle non-C comment                (n,v,i)
     \cfr      frame comment                       (n,i)
     \cfu      function comment                    (n,i)
     \cme      method description                  (n,i)
     \ccl      class description                   (n,i)
     \cfdi     file description (implementation)   (n,i)
     \cfdh     file description (header)           (n,i)
     \ccs      C/C++-file section  (tab. compl.)   (n,i)
     \chs      H-file section      (tab. compl.)   (n,i)
     \ckc      keyword comment     (tab. compl.)   (n,i)
     \csc      special comment     (tab. compl.)   (n,i)
     \cma      plugin macros       (tab. compl.)   (n,i)
     \cd       date                                (n,v,i)
     \ct       date \& time                        (n,v,i)
  [n]\cx       toggle comments: C <--> C++         (n,v,i)

  -- Statements ---------------------------------------------------------

     \sd       do { } while                        (n,v,i)
     \sf       for                                 (n,i)
     \sfo      for { }                             (n,v,i)
     \si       if                                  (n,i)
     \sif      if { }                              (n,v,i)
     \sie      if else                             (n,v,i)
     \sife     if { } else { }                     (n,v,i)
     \se       else { }                            (n,v,i)
     \sw       while                               (n,i)
     \swh      while { }                           (n,v,i)
     \ss       switch                              (n,v,i)
     \sc       case                                (n,i)
     \sb       {}                                  (n,v,i)

  -- Idioms -------------------------------------------------------------

     \if       function                            (n,v,i)
     \isf      function static                     (n,v,i)
     \im       main()                              (n,v,i)
     \ie       enum   + typedef                    (n,i)
     \is       struct + typedef                    (n,i)
     \iu       union  + typedef                    (n,i)
     \isc      scanf()                             (n,i)
     \ipr      printf()                            (n,i)
     \ica      p=calloc()                          (n,i)
     \ima      p=malloc()                          (n,i)
     \ire      p=realloc()                         (n,i)
     \isi      sizeof()                            (n,v,i)
     \ias      assert()                            (n,v)
     \ii       open input file                     (n,i)
     \io       open output file                    (n,i)
     \ifsc     fscanf                              (n,i)
     \ifpr     fprintf                             (n,i)
  [n]\i0       for( x=0; x<n; x+=1 )               (n,v,i)
  [n]\in       for( x=n-1; x>=0; x-=1 )            (n,v,i)

  -- Preprocessor -------------------------------------------------------

     \pih      include standard library header     (n,i)
     \pg       #include <>  (global)               (n,i)
     \pl       #include ""  (local)                (n,i)
     \pd       #define                             (n,i)
     \pu       #undef                              (n,i)
     \pif      #if  #endif                         (n,v,i)
     \pie      #if  #else #endif                   (n,v,i)
     \pid      #ifdef #else #endif                 (n,v,i)
     \pin      #ifndef #else #endif                (n,v,i)
     \pind     #ifndef #def #endif                 (n,v,i)
     \pe       #error                              (n,i)
     \pl       #line                               (n,i)
     \pp       #pragma                             (n,i)
     \pw       #warning                            (n,i)
     \pi0      #if 0 #endif                        (n,v,i)
     \pr0      remove #if 0 #endif                 (n,i)

  -- Snippets -----------------------------------------------------------

     \nr       read code snippet                   (n,i)
     \nv       view code snippet (read-only)       (n,i)
     \nw       write code snippet                  (n,v,i)
     \ne       edit code snippet                   (n,i)

  [n]\nf       pick up function prototype          (n,v,i)
  [n]\np       pick up function prototype          (n,v,i)
  [n]\nm       pick up method prototype            (n,v,i)
     \ni       insert prototype(s)                 (n,i)
     \nc       clear  prototype(s)                 (n,i)
     \ns       show   prototype(s)                 (n,i)

     \ntl      edit local templates                (n,i)
     \ntr      reread templates                    (n,i)
     \njt      include jump tags                   (n,i)

  -- C++ ----------------------------------------------------------------

     \+ih      include C++ standard library header (n,i)
     \+ich     include C standard library header   (n,i)
     \+om      output manipulators                 (n,i)
     \+fb      ios flag bits                       (n,i)
     \+c       class                               (n,i)
     \+cn      class (using new)                   (n,i)
     \+tc      template class                      (n,i)
     \+tcn     template class (using new)          (n,i)
     \+ec      error class                         (n,i)
     \+tf      template function                   (n,i)
     \+tr      try ... catch                       (n,v,i)
     \+ca      catch                               (n,v,i)
     \+caa     catch(...)                          (n,v,i)
     \+ex      extern "C" {  }                     (n,v,i)
     \+oif     open input file                     (n,v,i)
     \+oof     open output file                    (n,v,i)
     \+uns     using namespace std;                (n,v,i)
     \+un      using namespace xxx;                (n,v,i)
     \+unb     namespace xxx {  }                  (n,v,i)
     \+na      namespace alias                     (n,v,i)
     \+rt      RTTI                                (n,v,i)

     \+ic      class implementation                (n,i)
     \+icn     class (using new) implementation    (n,i)
     \+im      method implementation               (n,i)
     \+ia      accessor implementation             (n,i)
     \+itc     template class implementation       (n,i)
     \+itcn    template class (using new) impl.    (n,i)
     \+itm     template method implementation      (n,i)
     \+ita     template accessor implementation    (n,i)
     \+ioi     operator >>                         (n,i)
     \+ioo     operator <<                         (n,i)

  -- Run ----------------------------------------------------------------

    \rc       save and compile                    (n,i)
    \rl       link                                (n,i)
    \rr       run                                 (n,i)
    \ra       set comand line arguments           (n,i)
    \rd       run debugger                        (n,i)

    \re       executable to run                   (n,i)

    \rp       run splint                          (n,i)
    \rpa      cmd. line arg. for splint           (n,i)
    \rcc      run cppcheck                        (n,i)
    \rccs     severity for cppcheck               (n,i)
    \rk       run CodeCheck (TM)                  (n,i)
    \rka      cmd. line arg. for CodeCheck (TM)   (n,i)
    \ri       run indent                          (n,v,i)
 [n]\rh       hardcopy buffer                     (n,v,i)
    \rs       show plugin settings                (n,i)
    \rx       set xterm size                      (n, only Linux/UNIX & GUI)
    \ro       change output destination           (n,i)

The file c-hotkeys.pdf contains a reference card for these key mappings.
Multi-line inserts and code snippets will be indented after insertion.

The hotkeys are defined in the template files (part of this csupport
plugin package) and described in the document c-hotkeys.pdf

Changing the default map leader '\'

The map leader can be changed by the user by setting a global variable in the
file .vimrc

 let g:C_MapLeader  = ','

The map leader is now a comma. The 'line end comment' command is now defined
as ',cl'. This setting will be used as a so called local leader and influences
only files with filetype 'c' and 'cpp'.

The configured mapleader can also be used in the ftplugin, by calling the
functions C_SetMapLeader() and C_ResetMapLeader() . The maps created
between the two calls will use |g:C_MapLeader| as the |<LocalLeader>|:

  call C_SetMapLeader ()

  map  <buffer>  <LocalLeader>eg  :echo "Example Map :)"<CR>

  call C_ResetMapLeader ()

3.  HOTKEYS                                                 csupport-hotkeys

The following hotkeys are defined in normal, visual and insert mode:

       F9   compile and link
   Alt-F9   write buffer and compile
  Ctrl-F9   run executable
 Shift-F9   set command line arguments

 Shift-F2   switch between source files and header files

The hotkeys are defined in the file type plugin  c.vim.  All hotkeys from the
non-GUI mode also work for gVim (see |csupport-usage-vim|).

Shift-F2 can be used to switch between source files and header files if the
plugin a.vim (http://vim.sourceforge.net/scripts/script.php?script_id=31) is
present.  To suppress the creation of a new header file when switching from a
source file the file ~/.vimrc should contain a line

  let g:alternateNoDefaultAlternate = 1

A header file will only be opened if it already exists.

The Shift-key is dead when you are working with Vim in a console terminal
(non-Gui). You could add

  noremap   \a        :A<CR>
 inoremap   \a   <C-C>:A<CR>

to get a hot key for this case.

4.  CUSTOMIZATION                                            csupport-custom

4.1  GLOBAL VARIABLES                              csupport-custom-glob-vars

Several global variables are checked by the script to customize it:

 GLOBAL VARIABLE           DEFAULT VALUE                    TAG (see below)
 g:C_CExtension             'c'
 g:C_CFlags                 '-Wall -g -O0 -c'
 g:C_CodeCheckExeName       'check'
 g:C_CodeCheckOptions       '-K13'
 g:C_CodeSnippets           plugin_dir.'/c-support/codesnippets/'
 g:C_Ctrl_j                 'on'
 g:C_Debugger               'gdb'
 g:C_Dictionary_File        ''
 g:C_GlobalTemplateFile     plugin_dir.'c-support/templates/Templates'
 g:C_GuiSnippetBrowser      'gui'
 g:C_GuiTemplateBrowser     'gui'
 g:C_InsertFileHeader       'yes'
 g:C_LFlags                 '-Wall -g -O0'
 g:C_Libs                   '-lm'
 g:C_LineEndCommColDefault  49
 g:C_LoadMenus              'yes'
 g:C_CreateMenusDelayed     'no'
 g:C_LocalTemplateFile      $HOME.'/.vim/c-support/templates/Templates'
 g:C_MapLeader              '\'
 g:C_MenuHeader             'yes'
 g:C_NonCComment            '#'
 g:C_OutputGvim             'vim'
 g:C_Printheader            "%<%f%h%m%<  %=%{strftime('%x %X')}     Page %N"
 g:C_RootMenu               '&C\/C\+\+.'
 g:C_SourceCodeExtensions   'c cc cp cxx cpp CPP c++ C i ii'
 g:C_TypeOfH                'cpp'
 g:C_VimCompilerName        gcc
 g:C_XtermDefaults          '-fa courier -fs 12 -geometry 80x24'

  g:C_CCompiler             'gcc'
  g:C_CplusCompiler         'g++'
  g:C_ExeExtension          ''
  g:C_Man                   'man'
  g:C_ObjExtension          '.o'
  g:C_CCompiler             'gcc.exe'
  g:C_CplusCompiler         'g++.exe'
  g:C_ExeExtension          '.exe'
  g:C_Man                   'man.exe'
  g:C_ObjExtension          '.obj'

The variable plugin_dir will automatically be set to one of the following values:
  $HOME.'/.vim/'        for Linux/Unix
  $VIM.'/vimfiles/'     for Windows

 g:C_CCompiler             : The name of the C compiler.
 g:C_CExtension            : Extension of C files. Everything else is C++.
 g:C_CFlags                : Compiler flags used for a compilation.
 g:C_CodeCheckExeName      : The name of the CodeCheck (TM) executable (the
                             default is 'check')
 g:C_CodeCheckOptions      : Default options for CodeCheck (TM) (see
 g:C_CodeSnippets          : The name of the code snippet directory (see
 g:C_CplusCompiler         : The name of the C++ compiler.
 g:C_Ctrl_j                : hotkey Ctrl-j  'on'/'off' (see |csupport-Ctrl-j|)
 g:C_Debugger              : the default debugging: 'gdb', 'kdbg', or 'ddd'
 g:C_Dictionary_File       : The name(s) of the dictionary file(s) used for
                             word completion (see also |csupport-dictionary|)
 g:C_ExeExtension          : C/C+ file extension for executables (leading
                             point required if not empty)
 g:C_GlobalTemplateFile    : sets the global template file (see |csupport-templates|)
 g:C_GuiSnippetBrowser     : code snippet browser: 'gui', 'commandline'
 g:C_GuiTemplateBrowser    : code template browser: 'gui', 'explorer', 'commandline'
 g:C_InsertFileHeader      : insert file prolog in a new file ('yes', 'no')
 g:C_LFlags                : Compiler flags used for linkage.
 g:C_Libs                  : Libraries to link with.
 g:C_LineEndCommColDefault : Default starting column for end-of-line comments.
 g:C_LoadMenus             : Load menus and mappings ("yes", "no") at startup.
 g:C_CreateMenusDelayed    : Load menus only with filetypes 'c' or 'cpp'
 g:C_LocalTemplateFile     : sets the local template file  (see |csupport-templates|)
 g:C_Man                   : The name of the man utility.
 g:C_MapLeader             : the map leader for hotkeys (see ||csupport-usage-vim|)
 g:C_MenuHeader            : Switch the submenu header on/off.
 g:C_NonCComment           : comment leader string for a non-C comment
 g:C_ObjExtension          : C/C+ file extension for objects (leading point
                             required if not empty)
 g:C_OutputGvim            : when program is running output goes to the vim command
                             line ("vim"), to a buffer ("buffer") or to an xterm ("xterm").
 g:C_Printheader           : hardcopy: definition of the page header
 g:C_RootMenu              : The name of the root menu entry of this plugin
                             (see |csupport-custom-root|).
 g:C_SourceCodeExtensions  : filename extensions for C/C++ implementation files
 g:C_TypeOfH               : filetype of header files with extension 'h' (c,cpp)
 g:C_VimCompilerName       : the compiler name used by :compiler
 g:C_XtermDefaults         : the xterm defaults

To override the default add appropriate assignments to ~/.vimrc .
The following global variables can be changed on the fly from the Vim command
line, i.e. without restarting the editor:


If you change g:C_CFlags or g:C_LFlags, you have change to change the other
accordingly. The same holds for g:C_CplusCFlags and g:C_CplusLFlags (see also

4.2  THE ROOT MENU                                      csupport-custom-root

The variable g:C_RootMenu, if set (in '.vimrc' or in '.gvimrc'), gives the
name of the single gVim root menu entry in which the C/C++ submenus will be
put.  The default is

Note the terminating dot.

If you want to set the plugin root menu into another menu, e.g. 'Plugin',
this is done by the following line in '.vimrc'

  let g:C_RootMenu = '&Plugin.&C\/C\+\+.'

4.3  SYSTEM-WIDE INSTALLATION                           csupport-system-wide

A system-wide installation (one installation for all users) of the plug-in can
be done. This will mean however, that a user can not edit the template
library, for example to set his own name. So in case of a system-wide
installation, every user can have an own set of templates (called local
templates), which are localed in each users' home directory.
Note: As you might have guessed, this behavior is much more inspired by Linux
than Windows.

A system-wide installation is done as follows.

As *** SUPERUSER *** :

(1) Find the Vim installation directory.
The Vim Ex command ':echo $VIM' gives '/usr/local/share/vim' or something like
that. Beyond this directory you will find the Vim installation,  e.g. in
'/usr/local/share/vim/vim73' if Vim version 7.3 has been installed
(Windows: 'C:\Program Files\Vim').

(2) Create a new subdirectory 'vimfiles', e.g. '/usr/local/share/vim/vimfiles'
(Windows: 'C:\Program Files\Vim\vimfiles').

(3) Install C/C++ Support
Copy the archive cvim.zip to this new directory and unpack it:
  unzip cvim.zip

(4) Generate the help tags:
  :helptags $VIM/vimfiles/doc

SPECIAL CASES. Some Linux distributions use non-standard names for Vim
directories. SUSE has a directory '/usr/share/vim/site' to put plugins in.
These directories will not be found automatically.  After installing the
plugin below '/usr/share/vim/site' the use of the templates will be enabled by
the following line in '~/.vimrc':

  let g:C_GlobalTemplateFile = '/usr/share/vim/site/c-support/templates/Templates'

As *** USER *** :

Create your private snippet directory:

  mkdir --parents  ~/.vim/c-support/codesnippets

You may want to copy the snippets coming with this plugin (in
$VIM/vimfiles/c-support/codesnippets) into the new directory or to set a
link to the global directory.

Create your private template directory:

  mkdir --parents  ~/.vim/c-support/templates

Create a private template file 'Templates' (compulsory) in this directory to
overwrite some macros, e.g.

 SetMacro( 'AUTHOR',      'Dr. Fritz Mehner' )
 SetMacro( 'AUTHORREF',   'fgm' )
 SetMacro( 'EMAIL',       'mehner.fritz@web.de' )
 SetMacro( 'ORGANIZATION','FH Südwestfalen, Iserlohn' )
 SetMacro( 'COPYRIGHT',   'Copyright (c) |YEAR|, |AUTHOR|' )

You can also have local templates which override the global ones. To see a
messages in this case set a global variable in '~/.vimrc' (Windows: '~\_vimrc'):

  let g:Templates_MapInUseWarn = 0

The default is '1'.

5.  TEMPLATE FILES AND TAGS                               csupport-templates

5.1  TEMPLATE FILES                                 csupport-templates-files

Nearly all menu items insert code snippets or comments. All of these are
contained within template files and can be changed by the user to meet their
requirements. The menu shortcuts (e.g. 'c' for the Comments menu) and the
menu item hotkeys (e.g. '\ct' insert date and time) are also defined in the
The template engine comes as a separate plug-in contributed by Wolfgang Mehner.
This section is a short introduction to this template system. Please see
|templatesupport| for more information.

The master template file is '$HOME/.vim/c-support/templates/Templates' for
a user installation and  '$VIM/vimfiles/c-support/templates/Templates' for
a system-wide installation (see |csupport-system-wide|).

The master template file starts with a macro section followed by templates for
single menu items or better by including other template files grouping the
templates according to the menu structure of this plug-in. The master file
usually looks like this (my settings as an example):

 § ==========================================================
 §  User Macros
 § ==========================================================

 SetMacro( 'AUTHOR',      'Dr. Fritz Mehner' )
 SetMacro( 'AUTHORREF',   'fgm' )
 SetMacro( 'COMPANY',     '' )
 SetMacro( 'COPYRIGHT',   'Copyright (c) |YEAR|, |AUTHOR|' )
 SetMacro( 'EMAIL',       'mehner.fritz@web.de' )
 SetMacro( 'LICENSE',     'GNU General Public License' )
 SetMacro( 'ORGANIZATION','FH Südwestfalen, Iserlohn' )

 SetStyle( 'C' )

 § ==========================================================
 §  File Includes and Shortcuts
 § ==========================================================

 MenuShortcut( 'Comments',     'c' )
 MenuShortcut( 'Statements',   's' )
 MenuShortcut( 'Idioms',       'i' )
 MenuShortcut( 'Preprocessor', 'p' )
 MenuShortcut( 'Snippets',     'n' )
 MenuShortcut( 'C++',          'c' )
 IncludeFile( 'snippets.template'     )
 == USE STYLES : C ==
 IncludeFile( 'c.comments.template'     )
 IncludeFile( 'c.cpp.template'          )
 IncludeFile( 'c.idioms.template'       )
 IncludeFile( 'c.preprocessor.template' )
 IncludeFile( 'c.statements.template'   )
 IncludeFile( 'cpp.comments.template'     )
 IncludeFile( 'cpp.cpp.template'          )
 IncludeFile( 'cpp.idioms.template'       )
 IncludeFile( 'cpp.preprocessor.template' )
 IncludeFile( 'cpp.statements.template'   )

Lines starting with a section sign (§) are comments. The section starting with

  SetMacro( 'AUTHOR',      'Dr. Fritz Mehner' )

assigns values to predefined tags (macros).  Arbitrary user-defined macros are
possible. The macro name must follows the rules for a C language identifier:
first character letter  or underscore; case matters; digits are allowed
beginning with the second character.

The statement

  IncludeFile( 'c.comments.templates' )

includes the templates from the file 'c.comments.templates' (in the same
directory). An absolute path would also be possible.  The statement

  MenuShortcut( 'Comments',      'c' )

sets 'c' as the shortcut for the Comments menu.

5.2  MACROS                                        csupport-templates-macros

The following macro names are predefined. The first group is used to
personalize templates.

 |BASENAME|        filename without path and suffix
 |DATE|            the preferred date representation for the current locale
                    without the time
 |FILENAME|        filename without path
 |PATH|            path without filename
 |SUFFIX|          filename suffix
 |TIME|            the preferred time representation for the current locale
                    without the date and the time zone or name or abbreviation
 |YEAR|            the year as a decimal number including the century

 <CURSOR>           The cursor position after insertion of a template.
 <+text+>,<-text->  See |csupport-templates-jumptags|.

 <SPLIT>            The split point when inserting in visual mode

A dependent template file can start with its own command section. There is no
need to have all user defined macros in the master file.

5.2.1   USER DEFINED FORMATS FOR DATE AND TIME    csupport-templates-date

The format for |DATE| ,|TIME| , and|YEAR| can be set by the user. The
defaults are

  |DATE|        '%x'
  |TIME|        '%X'
  |YEAR|        '%Y'

See the manual page of the C function strftime() for the format.  The accepted
format depends on your system, thus this is not portable!  The maximum length
of the result is 80 characters.

User defined formats can be set using the following function calls in the
master template file is '$HOME/.vim/c-support/templates/Templates',  e.g.

  SetFormat( 'DATE', '%D'      )
  SetFormat( 'TIME', '%H:%M'   )
  SetFormat( 'YEAR', 'year %Y' )

5.3  TEMPLATES                                      csupport-templates-names

5.3.1    Template definition                csupport-templates-definition
The template behind a menu entry is identified by a given name. The first part
of the name identifies the menu name, the second part identifies the item.
A template definition starts with a template header with the following syntax:

  == menu_name.template_name == options ==

The options are described here: |template-support-options|.

5.3.2  The jump tags <+text+> etc.                csupport-templates-jumptags

There are four jump tag types which can be used as jump targets in templates:

 <+text+>   Can be jumped to by hitting Ctrl-j.
 {+text+}   Same as <+text+>. Used in cases where indentation gives unwanted
            results with the first one.

 <-text->   Same as the two above. Will be removed if the template is used
 {-text-}   in visual mode.

The text inside the brackets is userdefined and can be empty. The text can be
composed from letters (uppercase and lowercase), digits, and underscores.
After the insertion of an template these jump targets will be highlighted.

5.3.3  Command Ctrl-j                                        csupport-Ctrl-j

Use the command Ctrl-j to jump to the next target. The target will be removed
and the mode will switched to insertion. Ctrl-j works in normal and in insert
mode.  The template for an if-else-statement can be written as follows:

  == Statements.if, else == map:sie, sc:i ==
  if <CURSOR>

The cursor will be set as shown. When the condition is specified a Ctrl-j let
you jump to the target <-IF PART-> and deletes it.  When the block is written
a Ctrl-j leads you to the else-part.  The target <+ELSE_PART+> disappears and
you can type on.

5.5  BINDING A STYLE TO A FILE EXTENSION             csupport-templates-bind

You can bind the existing styles to one or more filename extensions. To do so
assign a Dictionary to the global variable g:C_Styles in '~/.vimrc' :

 let g:C_Styles = { '.c,.h' : 'C', '.cc,.cpp,.c++,.C,.hh,.h++,*.H' : 'CPP' }

A Dictionary is created with a comma separated list of entries in curly
braces.  Each entry has a key and a value, separated by a colon.  Each key can
only appear once. The keys are themselves a comma separated list of filename
pattern. The values are existing styles defined in the template files.
The given style will be set automatically when switching to a buffer or
opening a new buffer with the associated filename pattern and supersedes the
macro |STYLE| .

6.  C/C++ DICTIONARY                                     csupport-dictionary

The files


are a part of this plugin and can be used (together with your own lists) as
dictionaries for automatic word completion.  This feature is enabled by
default. The default word lists are


The variable plugin_dir will automatically be set by the plugin to one of the
following values:
  $HOME.'/.vim/'        for Linux/Unix
  $VIM.'/vimfiles/'     for Windows
If you want to use an additional list MyC.list put the following lines into
 ~/.vimrc :

 let g:C_Dictionary_File = PLUGIN_DIR.'/c-support/wordlists/c-c++-keywords.list,'.
       \                   PLUGIN_DIR.'/c-support/wordlists/k+r.list,'.
       \                   PLUGIN_DIR.'/c-support/wordlists/stl_index.list,'.
       \                   PLUGIN_DIR.'/c-support/wordlists/MyC.list'

When in file ~/.vimrc the name PLUGIN_DIR has to be replaced by $HOME or
$VIM (see above). Whitespaces in the pathnames have to be escaped with a
The right side is a comma separated list of files. Note the point at the end
of the first line (string concatenation) and the backslash in front of the
second line (continuation line).
You can use Vim's dictionary feature CTRL-X, CTRL-K (and CTRL-P, CTRL-N).

7.  EXTENDING  ctags                                          csupport-ctags

7.1  make AND qmake                                      csupport-ctags-make

The use of the Vim plugin taglist.vim (Author: Yegappan Lakshmanan) is highly
recommended. It uses the program ctags which generates tag files for 3 dozen
languages (Exuberant Ctags, Darren Hiebert, http://ctags.sourceforge.net).
With the following extensions the list of targets in a makefile can be shown
in the taglist window.

 1) Append the file customization.ctags to the file $HOME/.ctags .

 2) Add the following lines (from customization.vimrc) to $HOME/.vimrc :

  " taglist.vim : toggle the taglist window
  " taglist.vim : define the title texts for make
  " taglist.vim : define the title texts for qmake
   noremap <silent> <F11>  <Esc><Esc>:Tlist<CR>
  inoremap <silent> <F11>  <Esc><Esc>:Tlist<CR>

  let tlist_make_settings  = 'make;m:makros;t:targets;i:includes'
  let tlist_qmake_settings = 'qmake;t:SystemVariables'

  if has("autocmd")
    " ----------  qmake : set file type for *.pro  ----------
    autocmd BufNewFile,BufRead *.pro  set filetype=qmake
  endif " has("autocmd")

 3) restart vim/gvim

The two maps will toggle the taglist window (hotkey F11) in all editing modes.
The two assignments define the headings for the (q)make sections in the
taglist window.  The autocmd set the file type 'qmake' for the filename
extension 'pro' (ctags needs this).

7.2  TEMPLATES                                      csupport-ctags-templates

If you frequently change the plugin  templates and you are using the taglist
plugin (section above) you may want to use this plugin for navigation. This is
achieved in two steps. First add a new language definition to  the file
$HOME/.ctags :


Now add the following lines to the file $HOME/.vimrc :

  let tlist_template_settings  = 'template;t:template'
  " plugin templates : set filetype for *.template
  if has("autocmd")
    autocmd BufNewFile,BufRead Templates  set filetype=template
    autocmd BufNewFile,BufRead *.template  set filetype=template
  endif " has("autocmd")

The assignment defines the heading for the template section in the taglist
window.  The autocmds set the file type 'template' for the main template file
'Templates' and the includefiles '*.template' (if any).

8.  FOLDING                                                 csupport-folding

This plugin can be used together with folding.

There are a few peculiarities when the cursor is on a closed fold before
inserting a template:

Normal mode

Inserting blocks of complete lines below and above a fold (e.g. frame
comments) and inserting at the top of a buffer (e.g. file description) works
as usual.
Insertions which go to the end of a line (e.g. end-of-line comments) and
insertions which go to the cursor position (e.g. 'sizeof()') will be suppressed
and a warning will be shown.

Visual mode

A range of lines containing closed folds can be surrounded by constructs which
have a visual mode, e.g. a for-loop:

    for ( ; ; ) {
  +---  4 lines: {------------------------------------------------------------

See |folding| for more information on folding.

9.  Additional Mappings                                 csupport-ad-mappings

There are a few additional filetype specific key mappings defined in

Complete a classical C comment: '/' => '/ | */' (modes: i,v).

Complete a classical C multi-line comment (mode: i):
  '/<CR>' =>  /
                * |

Open a block (modes: i,v):
  '{<CR>' =>  {
In visual mode the content of the new block will be indented.

The file customization.cpp.vim provides additional insert mode mappings to
facilitate writting cin and cout statements, e.g.

  '<<'    -> ' << |'
  '<<"'   -> ' << "|" '
  '<<;'   -> ' << "|\n";'
  '>>'    -> ' >> |'

Copy this file to ~/.vim/ftplugin and rename it to 'cpp.vim'.

10.  WINDOWS PARTICULARITIES                                csupport-windows

For a user installation the plugin should go into the directory structure below
for a system installation below

The values of the two variables can be found from inside Vim:
   :echo $VIM
   :echo $HOME

The configuration files for a user are

  $HOME/_vimrc   and  $HOME/_gvimrc

for the system

  $VIM/_vimrc   and  $VIM/_gvimrc

Compiler settings:

It could be necessary to add further settings for your compiler.  To compile
C++-programs using a Dev-C++ installation (http://www.bloodshed.net) the
following item in $VIM/_vimrc is needed (depends on the Dev-C++ install

  let g:C_CFlags  = '-Wall -g -o0 -c -I c:\programs\dev-c++\include\g++'

11.  ADDITIONAL TIPS                                           csupport-tips

(1) gVim. Toggle 'insert mode' <--> 'normal mode' with the right mouse button
    (see mapping in file costumization.gvimrc).

(2) gVim. Use tear off menus.

(3) Try 'Focus under mouse' as window behavior (No mouse click when the mouse
    pointer is back from the menu item).

(4) Use Emulate3Buttons "on" (X11) even for a 3-button mouse. Pressing left
    and right button at the same time without moving your fingers is faster
    then moving a finger to the middle button (often a wheel).

12.  TROUBLESHOOTING                                csupport-troubleshooting

* I do not see any new main menu item.
  - Was the archive extracted into the right directory?

* How can I see what was loaded?
  - Use ':scriptnames' from the Vim command line.

* Some hotkeys do not work.
  - The hotkeys might be in use by your graphical desktop environment. Under
    KDE Ctrl-F9 is the hotkey which let you switch to the 9. desktop. The key
    settings can usually be redefined.

* The plug-in loads slowly.
  - By default, the template library is read while the plug-in is loading,
    since the templates also define most of the menu structure. To not slow
    down the startup of Vim, you can choose to only create the C/C++-menu when
    opening the first C/C++-file. For that, add this line to your ~/.vimrc:
      let g:C_CreateMenusDelayed = 'yes'
    The only downside is that you won't see the C/C++-menu before you start
    working on a C-file, or use the menu entry "Tools->Load C Support".

* After changing g:C_LFlags / g:C_CplusLFlags my source can not be linked or
  - The settings g:C_CFlags / g:C_CplusCFlags have to be changed accordingly
    (see |csupport-run-buffer|)

* Splint and/or CodeCheck menu item not visible.
  - The program is not installed or not found (path not set) or not executable.

* Code incorrectly indented after template insertion. The indentation may be
  incorrect inside blocks,  if the <CURSOR> tag also appears inside the block.
  See |template-support-templ-tags| for a detailed explanation.

13.  RELEASE NOTES                                    csupport-release-notes

See file c-support/doc/ChangeLog .


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