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Re: [PATCH] Add nofirstword completion option


From: Chet Ramey
Subject: Re: [PATCH] Add nofirstword completion option
Date: Fri, 25 May 2018 14:40:38 -0400
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:52.0) Gecko/20100101 Thunderbird/52.8.0

On 5/25/18 1:42 PM, Luca Boccassi wrote:

>> There is already logic that determines whether the shell is trying to
>> complete a command word (in_command_position). The existing code does
>> not attempt programmable completion if in_command_position == 1. The
>> additional functionality would:
>>
>> 1. Add an option to the complete builtin to specify how to complete
>>    command names, and store it in a specially-named compspec, like
>>    completion for empty lines does.
>>
>> 2. Add code to invoke that completion, if it exists and programmable
>>    completion is active, before attempting bash's default completion,
>>    if in_command_position == 1.
>>
>> Chet
> 
> Hi,
> 
> Thanks for the guidance! Unfortunately I'm still not quite there yet -
> inlined are the changes based on my understanding of the above. It
> implements a "usercmd/-U" option similar to the existing -E for empty
> line.
> 
> But at the moment all it does is to allow (via "complete -U -F foo") to
> complete when nothing is typed in, which seemed to be possible already
> with -E. If some characters are already typed in, it will still do the
> default completion to commands in the PATH.
> 
> What have I missed?

You should make sure you don't add your code in the section with the rest
of the programmable completions, since that block is not entered if
in_command_position != 0.


-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    address@hidden    http://tiswww.cwru.edu/~chet/



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