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Re: Getting "parse error" from _path_files
- X-seq: zsh-workers 11746
- From: Sven Wischnowsky <wischnow@xxxxxxxxxxxxxxxxxxxxxxx>
- To: zsh-workers@xxxxxxxxxxxxxx
- Subject: Re: Getting "parse error" from _path_files
- Date: Mon, 5 Jun 2000 10:04:08 +0200 (MET DST)
- In-reply-to: "Bart Schaefer"'s message of Mon, 5 Jun 2000 04:48:00 +0000
- Mailing-list: contact zsh-workers-help@xxxxxxxxxxxxxx; run by ezmlm
Bart Schaefer wrote:
> Cut'n'paste the following into a zsh-3.1.7:
>
> echo "${(@)${(@s:|:)${(@)${(@f)$(< /etc/printcap)}:#[ \#]*}%%:*}%%[ ]*}"
>
> Note that inside each pair of [ ] are a space and a tab.
>
> I get, at each tab:
>
> _path_files:249: parse error
>
> This is mildly annoying, as it aborts completion without giving the system a
> chance to clean up (e.g., it's another case where very bad things happen if
> it is _complete_debug that's called). I vaguely recall forcing something
> into a $(...) in some other completer to avoid a similar problem.
>
> There are actually two things at issue here. The second is that I'd rather
> that completion didn't happen when I'm doing cut'n'paste. I tried putting:
>
> (( PENDING )) && compstate[insert]=tab
>
> near the top of _main_complete, right after curcontext is set up, and that
> seems to help a bit, but I'm rather leery of that solution. It does need
> to use PENDING somehow, though.
It should then immediately return, too (to really avoid calling all
that completion code).
> Returning to the original issue: Perhaps it would be possible to special-
> case parsing within ${(e)...} so that errors of this sort simply return an
> empty value for the parameter rather than aborting the whole call chain?
> This would correspond to what happens when you use `eval', as in:
>
> function fail() {
> local x y z
> x='${y'
> eval 'z=${(e)x}'
> echo got here
> z=${(e)x}
> echo did not get here
> }
>
> Alternately, of course, we could use `eval' on line 249 of _path_files and
> in similar spots, but the quoting may sometimes get messy ...
How about a parameter flag, the opposite of `X', but used for `e' to
make it ignore parse errors and return an empty string in such cases?
Or make `e' not report errors normally and use `X' for `e', too, to
make it report errors?
Bye
Sven
--
Sven Wischnowsky wischnow@xxxxxxxxxxxxxxxxxxxxxxx
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