Re: How to customize CTRL-W CTRL-F?

On Sun, 27 Nov 2011, Peng Yu wrote:

> Hi,
>
> I want to customize the behavior of CTRL-W CTRL-F. For example, it is
> of the pattern #include <header.h>, I will search for C and C++ header
> file directories. If it is of the pattern import os, I'll search for
> python library directories for file os.py.
>
> More generally, it a line match for some pattern, I will call an
> external program (the program could be written as a vim function) to
> resolve the file to be opened.
>
> :help CTRL-W_f doesn't tell me how to customize it. Could anybody let
> me know how to do so? Thanks!

See:

:help 'include' -- 'inc' = how to determine a line might be an 'include'
:help 'includeexpr' -- 'inex' = how to transform that line into a filename

Generally, filetypes set up some minimal setup, usually enough to handle
files in the same directory or a subdir.

E.g. ft=python sets up:

include=s*\(from\|import\)
(which doesn't work... but that's a topic for a different thread)

and:
includeexpr=substitute(v:fname,'\.','/','g')

Obviously there are lots of cases where it could be improved, and it
often depends on the way a project is set up. Just wanted to point out
the simple setup already present. Most third-party ftplugins do this,
too. So, again, you might not have to do the work yourself.

If you do end up trying this on your own, this command is helpful:

:che! -- show all files detected as includes
:help :checkpath

--
Best,
Ben

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