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Re: Custom word completion, word splitting, bad behavior


From: Nick Patavalis
Subject: Re: Custom word completion, word splitting, bad behavior
Date: Thu, 8 Feb 2018 00:11:52 +0200

On Wed, Feb 7, 2018 at 11:12 PM, Chet Ramey <address@hidden> wrote:
>
> You might try, as an intermediate step, removing `'' and `"' from
> $COMP_WORDBREAKS and seeing how that works. I would be interested if it
> affected readline's ability to complete within quoted strings.
>

I have tried this, and it works ok for me. It doesn't seem to change
anything in the ability of readline to complete quoted strings /
filenames, at least as far as I can tell. What worked with " in
COMP_WORDBREAKS, seems to work without, what didn't, doesn't. In most
cases the quotes are *not* separated from neither the previous, nor
the following word, as in, for-example

    ls "/tmp/foo/a b"

which is split by readline (with the *default* COMP_WORDBREAKS value,
as well as without " in it), like:

    ls | "/tmp/foo/a b"

so this is expected.

Obviously, readline has no problem completing inside the quotes in
both cases.

On the other hand, readline seems not to be able to complete something
like:

    ls /tm"p/foo/a b"

(and I don't understand why), though this is true, regardless of
whether " is in COMP_WORDBREAKS or not. I *both* cases, the command line
is split (correctly) like:

   ls | /tm"p/foo/a b"

so, probably, this is irrelevant with the discussion at hand.

As I don't konw the internals of readline, I do not know in what
corner case the presence of " in COMP_WORDBREAKS could have an
effect.

/npat



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