On 30-Jul-2013 22:40 +0200, Manuel Ortega wrote:
> [34 lines deleted]
>
> By the way, I am a bit surprised that the aforementioned patterns in
> filetype.vim EVER worked. Nothing in :h autocmd-pattern or :h
> file-pattern suggests that the vim text regex elements '\{' or
> '\}'---used as quantifiers like with \{6\} or \{-n\}--- are kosher for
> use in autocmds. Instead those help files seem to say that we only have
> a relatively small set of patterns that are only slightly better than
> globbing wildcards.
>
> For that matter, the mutt patterns are part of a grand total of FOUR
> that try to use something like [:alnum:] in them, and nothing in the
> help files says *that* should work either!
>
> Are the docs underselling what's available for use in autocmd
> file-matching patterns? Bram, if '\{n\}' *is* kosher for autocmd
> file-patterns, please say so in the docs. Ditto for anything else left
> out like [:blah:]
>
> If OTOH the docs are not underselling, then the autocmds in filetype.vim
> that attempt to use \{n\} and [:blah:] are incorrect and should be replaced.
On a related note, I found several instances of the "**" pattern in
runtime/filetype.vim, even though a single "*" would suffice. I guess
the author was under the (false) impression that a single "*" would only
match one path component (i.e. up to a slash), and one would need "**"
for recursion (as is indeed the case for 'path', and 'tags'; too bad
there are so many conflicting syntaxes).
,----[ runtime/filetype.vim ]----
| au BufNewFile,BufRead *.git/modules/**/COMMIT_EDITMSG setf gitcommit
| au BufNewFile,BufRead *.git/modules/**/config setf gitconfig
| au BufNewFile,BufRead *.git/**
| au BufNewFile,BufRead */usr/**/gnupg/options.skel setf gpg
| au BufNewFile,BufRead */etc/initng/**/*.i,*.ii setf initng
`----
For clarity, these probably should be changed to single "*", as it
tricks the user (including me, until I tried it out) into believing this
is a feature. (Though it would probably be nice to have that feature,
but that would be breaking backward compatibility!)
How about adding an explicit note to the help:
#v+
diff -r d37fb0ea5c7a runtime/doc/autocmd.txt
--- a/runtime/doc/autocmd.txt Fri Aug 02 17:22:23 2013 +0200
+++ b/runtime/doc/autocmd.txt Fri Aug 02 18:02:27 2013 +0200
@@ -952,7 +952,7 @@
*file-pattern*
The pattern is interpreted like mostly used in file names:
- * matches any sequence of characters
+ * matches any sequence of characters (across path separators!)
? matches any single character
\? matches a '?'
. matches a '.'
#v-
-- regards, ingo
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