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In-Reply-To: <CB0FAF82.2D15%larrys@fb.com>
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Date: Thu, 15 Dec 2011 23:54:37 +0100
Message-ID: <CAHYJk3QdEp3pp2FLG6ZvmHHFcwK3sjS8VY-dQzqkv8cZOxyXQg@mail.gmail.com>
Subject: Re: Having a tough time setting up completion.
From: Mikael Magnusson <mikachu@gmail.com>
To: Larry Schrof <larrys@fb.com>
Cc: "zsh-users@zsh.org" <zsh-users@zsh.org>
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On 15 December 2011 23:06, Larry Schrof <larrys@fb.com> wrote:
> I've spent a lot to time studying the zshcompsys man page (the docs for _=
arguments specifically), but I"m still having a tough time specifying the s=
yntax to do the following completion.
>
> I have a command called foo. This command takes exactly one of three form=
s:
>
> foo  -x  <exactly-one-of-fifty-strings>
> foo --longword <exactly-one-of-fifty-strings>
> foo <exactly-one-of-fifty-strings>
>
> -x is a single-letter option, --longword is a double-dashed GNU-style lon=
g option. (These two options are synonymous.) Of these two options, either =
zero or exactly one of them should appear. IF one of them appears, it must =
appear immediately after foo (separated from foo, of course, by whitespace)=
.
>
> In all cases, <exactly-one-of-fifty-strings> is a single (non-leading-das=
h) word. As soon as this word is entered or completed, no other word from t=
he (really large) set should appear on the command line.
>
> If anyone can offer a general outline as to how I can use _arguments to i=
mplement this, that would be great. I need to manually enter in all fifty w=
ords at some point, and make them mutually exclusive. Will be interesting t=
o see how to do that. Thanks!

I'm not sure if I should be happy or sad I got this on the first try
without even using backspace, without looking anything up, and it
worked (all on one line if gmail breaks it):

compdef '_arguments ''(-x --longword)''{-x,--longword}''[something]''
''1:fiftystrings:(one two three and so forth fifty)''' foo

(i use rcquotes so you want '\'' instead of '', or more likely,
putting the whole quoted string in a regular completer.)
If you want to give a description for each words, use double parens
instead and separate desc with :, as
...:fiftystrings:((one:a\ description\ of\ one two:...

--=20
Mikael Magnusson