On Tue, 14 Apr 2009 10:13:38 +0800, Tony Mechelynck wrote:

>>
>> afaik all help files specify its own modeline. try :help
>> and go to the last line, you see:
>>
>> vim:tw=78:fo=tcq2:isk=!-~,^*,^\|,^\":ts=8:ft=help:norl:
>>
>> Since the above lies in the official help.txt, we can safely think that
>> this is the official way to write a help file. (see isk= in help.txt)
>
> OTOH, many others don't include an 'isk' setting:
>
> usr01.txt
> Copyright: see |manual-copyright|  vim:tw=78:ts=8:ft=help:norl:
>
> options.txt
>   vim:tw=78:ts=8:ft=help:norl:
>
> version7.txt
>   vim:tw=78:ts=8:ft=help:norl:
>
> etc.; note that all these are by Bram Moolenaar and include hotlinks
> with dots in them. Nevertheless clicking these hotlinks, or hitting
> Ctrl-] on them, leads you to the proper place. For instance, hitting
> Ctrl-] on the t of arabic.txt at line 729 of options.txt (after getting
> there by issuing ":help 'arabic'" and possibly scrolling to the end of
> the 'arabic' section) leads you to the arabic.txt helpfile, not to
> gui.txt which is the first result when matching for txt or .txt as the
> helptag.
>
> (Note: I have an after-ftplugin which sets the 'isk' option for
> helpfiles but I checked it with gvim -N -u NONE which doesn't load any
> plugin. The only scripts it sources are menu.vim and autoload/paste.vim.)

Right, that confuses me, why does it happen?

-- 
Hi,
Yue Wu

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