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From: "SZEDER Gábor" <szeder@ira.uka.de>
To: Jeff King <peff@peff.net>
Cc: Felipe Contreras <felipe.contreras@gmail.com>,
	git@vger.kernel.org, Junio C Hamano <gitster@pobox.com>
Subject: Re: [PATCH 3/3] completion: improve shell expansion of items
Date: Thu, 27 Sep 2012 02:37:51 +0200	[thread overview]
Message-ID: <20120927003751.GI10144@goldbirke> (raw)
In-Reply-To: <20120926215119.GC18653@sigill.intra.peff.net>

Hi,

On Wed, Sep 26, 2012 at 05:51:19PM -0400, Jeff King wrote:
> diff --git a/contrib/completion/git-completion.bash b/contrib/completion/git-completion.bash
> index be800e0..b0416ea 100644
> --- a/contrib/completion/git-completion.bash
> +++ b/contrib/completion/git-completion.bash
> @@ -225,6 +225,18 @@ fi
>  fi
>  fi
>  
> +# Quotes each element of an IFS-delimited list for shell reuse
> +__git_quote()
> +{
> +	local i
> +	local delim
> +	for i in $1; do
> +		local quoted=${i//\'/\'\\\'\'}
> +		printf "${delim:+$IFS}'%s'" "$quoted"
> +		delim=t
> +	done
> +}
> +
>  # Generates completion reply with compgen, appending a space to possible
>  # completion words, if necessary.
>  # It accepts 1 to 4 arguments:
> @@ -261,7 +273,7 @@ __gitcomp_nl ()
>  __gitcomp_nl ()
>  {
>  	local IFS=$'\n'
> -	COMPREPLY=($(compgen -P "${2-}" -S "${4- }" -W "$1" -- "${3-$cur}"))
> +	COMPREPLY=($(compgen -P "${2-}" -S "${4- }" -W "$(__git_quote "$1")" -- "${3-$cur}"))

Iterating through all possible completion words undermines the main
reason for __gitcomp_nl()'s existence: to handle potentially large
number of possible completion words faster than the old __gitcomp().
If we really have to iterate in a subshell, then it would perhaps be
better to drop __gitcomp_nl(), go back to using __gitcomp(), and
modify that instead.

After all, anyone could drop a file called git-cmd-${meta} on his
$PATH, and then get cmd- offered, because completion of git commands
still goes through __gitcomp().

  parent reply	other threads:[~2012-09-27  0:38 UTC|newest]

Thread overview: 37+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-09-20  2:15 [PATCH] completion: fix shell expansion of items Felipe Contreras
2012-09-20  1:46 ` Jeff King
2012-09-20 16:52   ` Junio C Hamano
2012-09-20 18:11   ` SZEDER Gábor
2012-09-20 18:21     ` Jeff King
2012-09-20 19:38       ` Felipe Contreras
2012-09-25  4:31     ` [PATCH] Revert "completion: fix shell expansion of items" Jeff King
2012-09-25 16:03       ` Junio C Hamano
2012-09-25 22:37       ` SZEDER Gábor
2012-09-25 23:28         ` Junio C Hamano
2012-09-26 21:46         ` Jeff King
2012-09-26 21:47           ` [PATCH 1/3] t9902: add a few basic completion tests Jeff King
2012-09-26 21:51           ` [PATCH 2/3] t9902: add completion tests for "odd" filenames Jeff King
2012-09-26 21:51           ` [PATCH 3/3] completion: improve shell expansion of items Jeff King
2012-09-26 21:57             ` [PATCH 4/3] completion: quote completions we find Jeff King
2012-09-27 21:40               ` SZEDER Gábor
2012-09-27 22:31                 ` Junio C Hamano
2012-09-27 22:58                   ` SZEDER Gábor
2012-09-27  0:37             ` SZEDER Gábor [this message]
2012-09-27  6:28               ` [PATCH 3/3] completion: improve shell expansion of items Jeff King
2012-09-27  6:43                 ` Jeff King
2012-09-27 19:48                   ` Jeff King
2012-09-28 10:05                   ` SZEDER Gábor
2012-09-28 10:09                     ` [PATCH 1/5] completion: fix non-critical bugs in __gitcomp() tests SZEDER Gábor
2012-09-28 10:09                       ` [PATCH 2/5] completion: fix args of run_completion() test helper SZEDER Gábor
2012-09-28 18:04                         ` Junio C Hamano
2012-09-28 18:38                           ` SZEDER Gábor
2012-09-28 19:23                             ` Junio C Hamano
2012-09-28 19:30                               ` Jeff King
2012-09-28 19:49                                 ` Junio C Hamano
2012-09-28 19:55                                   ` Jeff King
2012-09-28 20:28                               ` SZEDER Gábor
2012-09-28 10:09                       ` [PATCH 3/5] completion: add tests for the __gitcomp_nl() completion helper function SZEDER Gábor
2012-09-28 10:09                       ` [PATCH 4/5] completion: test __gitcomp() and __gitcomp_nl() with expandable words SZEDER Gábor
2012-09-28 10:09                       ` [POC PATCH 5/5] completion: avoid compgen to fix expansion issues in __gitcomp_nl() SZEDER Gábor
2012-09-28 15:08                         ` SZEDER Gábor
2012-09-28 15:46                           ` Jeff King

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