On Mon, Nov 8, 2010 at 3:34 PM, Christian Brabandt <cbli...@256bit.org> wrote:
> On Fr, 05 Nov 2010, Benjamin R. Haskell wrote:
>> Removing the optionality, it's also weird, as the trailing space
>> (singular!?) isn't matched:
>>
>> /\%V\S\+\s*\%V
>> xxxxx VVV VVV VVV xxxxx - text
>> mmmmmmmmmmmm - match
>> xxxxx VVV xxxxx - text
>> mmmm - match
>>
>> Can anyone shed some light on this?
> This is a bug. The regular expression engine is quite complex in Vim. I
> think, the attached patch fixes it.
What I see with your patch is that end of the match is including the
first non-whitespace character after the end of the whitespace sequence.
This means all matches other than the first start on the second
non-whitespace character in the \S sequence and if the last
non-whitespace sequence is only one character, the subsequent whitespace
sequence won't be matched.
Using the style from above (with alternating case for 'm' indicating the
distinct matches):
xxxxx VVV VVV V xxxx - text
mmmmmMMMM - match
Also, I see inconsistent highlighting with 'incsearch' enabled when the
user has typed part of an escape sequence (e.g., '\' or '\%'). The
highlighting for every line below some arbitrary line completely
disappears until the escape sequence is completed. Performing a
":redraw!" or "/<Up>" may also trigger this.
If this happens while typing the search string, complete the escape
sequence, backspace to make it incomplete, complete it, etc. You'll see
the portion of the file that's properly syntax highlighted increase
every time you change the (in)complete status of the escape sequence.
Not sure if it's related, but the patch also introduces this warning:
regexp.c: In function ‘regtry’:
regexp.c:3741: warning: comparison between pointer and integer
--
James
GPG Key: 1024D/61326D40 2003-09-02 James Vega <james...@jamessan.com>
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