Ben Fritz wrote:
[...]
> > Now the question is what will break if we change the default for
> > 'shellxquote'. I'm not sure about that.
>
> I doubt that changing the default would break anything built into Vim,
> but I suppose that remains to be seen. Changing the default would
> certainly add a whole class of use cases that work "out of the box".
> Any corner cases that for some reason do not work properly could
> easily be worked around as done in the plugin mentioned, by setting
> and restoring shellxquote (and possibly shellcmdflag). I haven't found
> a way to break system() with shellxquote=\", but there is certainly a
> way to break it with the current default. I have admittedly not done
> much with shellxquote for uses other than system(). I see potential
> for a problem here, especially when using redirection, but I _think_
> it will work.
>
> Plugins are another question though. For testing, I placed my proposed
> values of shellxquote and shellcmdflag in my vimrc, and immediately
> broke the TagList plugin.
>
> This seems to be caused by a bug in TagList, actually. I don't think
> the following code is needed, and it is the root of the bug. But, I'm
> not actually sure what the intent of it is:
>
> if &shellxquote == '"'
> " Double-quotes within double-quotes will not work in the
> " command-line.If the 'shellxquote' option is set to double-
> quotes,
> " then escape the double-quotes in the ctags command-line.
> let ctags_cmd = escape(ctags_cmd, '"')
> endif
>
> Later (in Windows), Taglist writes ctags_cmd to a temporary batch file
> and executes the batch file with system().
>
> I wonder how many other plugins do something similar.
The problem here appears to be that the plugin assumes a sh like
'shell'. Escaping double quotes with a backslash doesn't work for
cmd.exe, it sees backslashes as path separators..
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