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created 2005 · complexity basic · author Don Mitchell · version 6.0
In program development, it is common to use the name of the current file as a classname, after omitting the path and extension of the file. One way to do this quickly is to use an insert-mode abbreviation. In the following example
,f is mapped as an abbreviation for the filename without the path and extension. Add the following lines to your vimrc file to define the abbreviation:
" Insert classname (filename minus path and extension). iab <buffer> <unique> ,f <C-r>=expand('%:t:r')<CR>
In insert mode, typing
<C-r>= (Ctrl-R then
=) inserts the value of the following expression. The expression is
expand('%:t:r') (terminated by
<CR> which represents Enter).
expand() function expands
'%' (representing the name of the current file), while modifying that name according to the given codes:
:t is the tail of the full path name (file name and extension, after omitting any path), and
:r is the root part of the name after omitting any extension.
To use this, while in insert mode, type
,f followed by a space or the escape key to insert the name of the current file.
- :help filename-modifiers information on filename modifiers
Rather than vimrc, the mapping should be in a file in a filetype plugin directory. Then, using
<buffer> would be useful (the abbreviation would only apply for files of that type). The tip needs some rewording for that. JohnBeckett (talk) 10:31, December 20, 2012 (UTC)