Re: question about 'isfname'

On 2011-07-29, Gary Johnson wrote:
> On 2011-07-29, sc wrote:
> > list--
> >
> > i like to grep and pipe the results into an unnamed hidden vim
> > buffer so when i see a module i want to edit i can hit F4 on
> > it
> >
> > i have F4 defined as
> >
> > map <F4> :call OpenWhat()<CR>
> > function! OpenWhat()
> > let testme = expand("<cfile>")
> > if isdirectory(testme)
> > call CdMaik()
> > else
> > e <cfile>
> > endif
> > endfunction
> >
> > the relevant portion being the edit of <cfile>
> >
> > a typical chunk of grep output might look like the following:
> >
> > hl:open(PRS, ".prime_run_start");
> > hl2:open(PRS, ".prime_run_start");
> > inst:echo "restoreprs restores .prime_run_start from save_prs"
> > inst:echo "saveprs saves .prime_run_start to save_prs"
> > nmt:open(PRS, ".prime_run_start");
> >
> > when it first comes up, F4 performs fine and i am able to edit
> > for example 'hl' because the default value for 'isfname' does
> > not include ':'
> >
> > however, when 'hl' is a perl module, 'isfname' gets redefined
> > by $RUNTIME/ftplugin/perl.vim so when i quit or bp back to the
> > unnamed buffer with the grep output my F4 no longer works --
> > perl.vim adds ':' to 'isfname' and now it would try to open
> > 'hl:open', creating a new file by that name
> >
> > according to the help isfname is a global option so forcing
> > perl.vim to perform a setlocal would have no effect
> >
> > has anyone else run into this and if so, how did you deal with
> > it?
>
> If the file name is always to the left of the ':', you could change
>
> let testme = expand("<cfile>")
>
> to
>
> let testme = substitute(expand("<cfile>"), ':.*', '', '')

Here's a better way that grabs the file name under the cursor
instead of assuming that the file name is to the left of the ':'.
It saves the value of 'isfname', removes the ':' before accessing
<cword>, then restores the original value.

function! OpenWhat()
let l:isf = &isf
set isf-=:

let testme = expand("<cfile>")
if isdirectory(testme)
call CdMaik()
else
e <cfile>
endif

let &isf = l:isf
endfunction

I also forgot part of my first solution. You would also have to
change

e <cfile>

(which I'm surprised even works) to

exe 'e' testme

Regards,
Gary

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