AndyHancock wrote:
> I've been kluging an old version of BufExplorer plugin to trim down
> displayed paths when invoked by different gvim versions (Solaris,
> Windows, and Cygwin). Without such trimming, BufExplorer might
> display:
>
> 5 % Temp.txt c:\cygwin\home\Administrator\Temp
> 1 # diff.out c:\cygwin\home\Administrator\Temp
>
> I've managed to cobble the code so that in Solaris and Cygwin, it is
> displayed as
>
> 5 % Temp.txt ~\Temp
> 1 # diff.out ~\Temp
>
> However, I'm having some trouble making the code work with Windows vim
> 7.2. Currently, I am using the code:
>
> let _cfile = _cfile." ".substitute(
> \ expand("#"._cnr.":p:h"),
> \ "[Cc]:\\cygwin\\home\\".$USERNAME, "~", "g" )
>
> Here, _cfile is the basename of the file path before the statement is
> excuted. This code doesn't do anything. As a debugging test,
> however, this "works":
>
> let _cfile =
> \ _cfile." ".substitute( expand("#"._cnr.":p:h"),
> \ "c:\\", "~", "g" )
>
> It works in the sense that "c:\" in the file path is replaced by "~".
> This test "works" too:
>
> let _cfile =
> \ _cfile." ".substitute( expand("#"._cnr.":p:h"),
> \ "cygwin", "~", "g" )
>
> It works in the sense that "cygwin" is replaced by "~".
>
> Strangely enough, the combination of the above two tests does not
> work:
When you specify a pattern such as "c:\\", the 2 backslashes become 1
prior to compilation of the regex. Thus, what the regex compiler sees is
'c:\'. Since nothing follows the backslash, it can't be an escape, so
the regex engine matches it as a literal backslash character. Similarly,
when you specify a pattern such as "c:\\cygwin", the 2 backslashes
become 1 prior to compilation of the regex. Thus, what the regex
compiler sees is 'c:\cygwin'. Note that something (the `c' in cygwin)
now follows the backslash, so the regex engine interprets the backslash
as an escape, and assumes you want to match `c:', followed by a literal
`c' (indicated by `\c'), followed by `ygwin'. In other words, the regex
engine is looking for...
c:cygwin
...which is probably not what you want. To match what I think you want,
you should use 'c:\\cygwin' instead of "c:\\cygwin". If you wanted to
use double quotes, it would be "c:\\\\cygwin".
Brett Stahlman
>
> let _cfile =
> \ _cfile." ".substitute( expand("#"._cnr.":p:h"),
> \ "c:\\cygwin", "~", "g"
>
> I am partly using this exercise as a prompt to get to know vim
> scripting better. Could someone please advise on what might be the
> problem, and where I can dig up more about its resolution?
>
> Thanks.
> >
>
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