From: Lessley Dennington <lessleydennington@gmail.com>
To: Elijah Newren <newren@gmail.com>
Cc: Lessley Dennington via GitGitGadget <gitgitgadget@gmail.com>,
Git Mailing List <git@vger.kernel.org>,
Derrick Stolee <stolee@gmail.com>,
Junio C Hamano <gitster@pobox.com>,
johannes.schindelin@gmail.com
Subject: Re: [PATCH v2 2/2] sparse-checkout: custom tab completion
Date: Wed, 5 Jan 2022 14:20:21 -0600 [thread overview]
Message-ID: <8202614a-022f-b71c-cf88-d5a3788cc150@gmail.com> (raw)
In-Reply-To: <CABPp-BFJF7hyr5onMFQNC7r_x+XfJVn9wXhxyMV6Lu+pxbfyPA@mail.gmail.com>
On 1/4/22 2:42 PM, Elijah Newren wrote:
> On Tue, Jan 4, 2022 at 11:41 AM Lessley Dennington
> <lessleydennington@gmail.com> wrote:
>>
>>
>>
>> On 12/31/21 4:52 PM, Elijah Newren wrote:
>>> On Fri, Dec 31, 2021 at 2:33 AM Lessley Dennington via GitGitGadget
>>> <gitgitgadget@gmail.com> wrote:
>>>>
>>>> From: Lessley Dennington <lessleydennington@gmail.com>
>>>>
>>>> Fix custom tab completion for sparse-checkout command. This will ensure:
>>>>
>>>> 1. The full list of subcommands is provided when users enter git
>>>> sparse-checkout <TAB>.
>>>> 2. The --help option is tab-completable.
>>>> 3. Subcommand options are tab-completable.
>>>> 4. A list of directories (but not files) is provided when users enter git
>>>> sparse-checkout add <TAB> or git sparse-checkout set <TAB>.
>>>>
>>>> Failing tests that were added in the previous commit to verify these
>>>> scenarios are now passing with these updates.
>>>>
>>>> Signed-off-by: Lessley Dennington <lessleydennington@gmail.com>
>>>> ---
>>>> contrib/completion/git-completion.bash | 38 ++++++++++++++++++--------
>>>> t/t9902-completion.sh | 8 +++---
>>>> 2 files changed, 30 insertions(+), 16 deletions(-)
>>>>
>>>> diff --git a/contrib/completion/git-completion.bash b/contrib/completion/git-completion.bash
>>>> index c82ccaebcc7..7de997ee64e 100644
>>>> --- a/contrib/completion/git-completion.bash
>>>> +++ b/contrib/completion/git-completion.bash
>>>> @@ -2986,24 +2986,38 @@ _git_show_branch ()
>>>> __git_complete_revlist
>>>> }
>>>>
>>>> +__git_sparse_checkout_subcommand_opts="--cone --no-cone --sparse-index --no-sparse-index"
>>>> +
>>>> _git_sparse_checkout ()
>>>> {
>>>> - local subcommands="list init set disable"
>>>> + local subcommands="list init set disable add reapply"
>>>> local subcommand="$(__git_find_on_cmdline "$subcommands")"
>>>> +
>>>> if [ -z "$subcommand" ]; then
>>>> - __gitcomp "$subcommands"
>>>> - return
>>>> + case "$cur" in
>>>> + --*)
>>>> + __gitcomp "--help"
>>>> + ;;
>>>> + *)
>>>> + __gitcomp "$subcommands"
>>>> + ;;
>>>> + esac
>>>> fi
>>>>
>>>> - case "$subcommand,$cur" in
>>>> - init,--*)
>>>> - __gitcomp "--cone"
>>>> - ;;
>>>> - set,--*)
>>>> - __gitcomp "--stdin"
>>>> - ;;
>>>> - *)
>>>> - ;;
>>>> + case "$prev" in
>>>
>>> Shouldn't this be "$subcommand" rather than "$prev"? I think with
>>> prev, it will only correctly complete the first path after "set",
>>> "add", etc.
>>>
>> Good catch, thank you! Fixing in v3.
>>>> + set)
>>>> + __gitcomp "$__git_sparse_checkout_subcommand_opts --stdin"
>>>> + __gitcomp "$(git ls-tree -d -r HEAD --name-only)"
>>>> + ;;
>>>> + add)
>>>> + __gitcomp "--stdin"
>>>> + __gitcomp "$(git ls-tree -d -r HEAD --name-only)"
>>>
>>> I was going to make a simple suggestion for making it just complete
>>> one additional level at a time and leaving out the -r, and then tried
>>> it out and found out it wasn't simple. I got something working,
>>> eventually, but it's slightly ugly...so it probably belongs in a
>>> separate patch anyway. If you're curious, it's basically replacing
>>> the second __gitcomp... call for each of set and add with
>>> `__gitcomp_directories`, after first defining:
>>>
>>> __gitcomp_directories ()
>>> {
>>> local _tmp_dir _tmp_completions
>>>
>>> # Get the directory of the current token; this differs from dirname
>>> # in that it keeps up to the final trailing slash. If no slash found
>>> # that's fine too.
>>> [[ "$cur" =~ .*/ ]]
>>> _tmp_dir=$BASH_REMATCH
>>>
>>> # Find possible directory completions, adding trailing '/' characters
>>> _tmp_completions="$(git ls-tree -d --name-only HEAD $_tmp_dir |
>>> sed -e s%$%/%)"
>>>
>>> if [[ -n "$_tmp_completions" ]]; then
>>> # There were some directory completions, so find ones that
>>> # start with "$cur", the current token, and put those in COMPREPLY
>>> local i=0 c IFS=$' \t\n'
>>> for c in $_tmp_completions; do
>>> if [[ $c == "$cur"* ]]; then
>>> COMPREPLY+=("$c")
>>> fi
>>> done
>>> elif [[ "$cur" =~ /$ ]]; then
>>> # No possible further completions any deeper, so assume we're at
>>> # a leaf directory and just consider it complete
>>> __gitcomp_direct_append "$cur "
>>> fi
>>> }
>>>
>>> But I don't think that needs to be part of this series; I can submit
>>> it later and hopefully get a completion expert to point out
>>> better/cleaner ways of what I've done above.
>>>
>> I'm admittedly curious about what made this so difficult. I removed the
>> '-r' and updated my tests to expect only directories at one level, and
>> they passed. But I imagine I'm being too simplistic.
>
> I've forgotten some details since last Saturday, but I think the
> problem was that doing that would only ever complete toplevel
> directories; after completing those you could keep tabbing to get a
> deeper directory. First, let's get a comparison point; ignoring
> sparse-checkout, I can do:
>
> cd $GIT_CLONE
> cd cont<TAB>b<TAB><TAB>
>
> and the ls line will replace those <TAB>s so that I see
>
> ls contrib/buildsystems/Generators
>
> Now, if we just removed the '-r' from your git-completion.bash
> changes, and then typed
>
> git sparse-checkout set cont<TAB>b<TAB><TAB>
>
> Then you'd see
>
> git sparse-checkout set contrib
>
> and see 'bin-wrappers', 'block-sha1', and 'builtin' as potential
> completions, but not as subdirs of contrib but instead sibling dirs to
> contrib. That completion rule wouldn't let you look within contrib/.
> My more complicated rule had to avoid calling __gitcomp to avoid
> adding spaces so that completions could continue (but should add them
> if we have tabbed all the way down and there are no more
> subdirectories), had to add trailing '/' characters so that we know
> when we have the full directory name to pass along to ls-tree, and
> then had to manually do the work that __gitcomp would manually do with
> making sure to only provide completions relevant to what has been
> typed so far.
Ah, I see. Thank you so much for the thorough explanation. I know you said
this series could go through without that update, but I feel like it
should probably be added. Don't want to start off with the wrong behavior.
next prev parent reply other threads:[~2022-01-05 20:20 UTC|newest]
Thread overview: 95+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-30 0:32 [PATCH 0/2] sparse checkout: custom bash completion updates Lessley Dennington via GitGitGadget
2021-12-30 0:32 ` [PATCH 1/2] sparse-checkout: custom tab completion tests Lessley Dennington via GitGitGadget
2021-12-30 13:43 ` Derrick Stolee
2021-12-30 16:19 ` Lessley Dennington
2021-12-30 17:43 ` Derrick Stolee
2021-12-31 19:27 ` Elijah Newren
2022-01-04 19:19 ` Lessley Dennington
2021-12-30 0:32 ` [PATCH 2/2] sparse-checkout: custom tab completion Lessley Dennington via GitGitGadget
2021-12-30 13:50 ` Derrick Stolee
2021-12-30 16:24 ` Lessley Dennington
2021-12-30 19:26 ` [PATCH v2 0/2] sparse checkout: custom bash completion updates Lessley Dennington via GitGitGadget
2021-12-30 19:26 ` [PATCH v2 1/2] sparse-checkout: custom tab completion tests Lessley Dennington via GitGitGadget
2021-12-31 20:03 ` Elijah Newren
2021-12-31 22:20 ` Junio C Hamano
2021-12-31 22:25 ` Elijah Newren
2022-01-04 19:25 ` Lessley Dennington
2022-01-04 20:25 ` Elijah Newren
2022-01-05 14:05 ` Lessley Dennington
2022-01-04 19:24 ` Lessley Dennington
2021-12-30 19:26 ` [PATCH v2 2/2] sparse-checkout: custom tab completion Lessley Dennington via GitGitGadget
2021-12-31 22:52 ` Elijah Newren
2022-01-04 19:41 ` Lessley Dennington
2022-01-04 20:42 ` Elijah Newren
2022-01-05 20:20 ` Lessley Dennington [this message]
2022-01-05 22:55 ` Elijah Newren
2022-01-10 18:59 ` [PATCH v3 0/3] sparse checkout: custom bash completion updates Lessley Dennington via GitGitGadget
2022-01-10 18:59 ` [PATCH v3 1/3] sparse-checkout: custom tab completion tests Lessley Dennington via GitGitGadget
2022-01-10 18:59 ` [PATCH v3 2/3] sparse-checkout: custom tab completion Lessley Dennington via GitGitGadget
2022-01-15 9:57 ` SZEDER Gábor
2022-01-16 1:03 ` Elijah Newren
2022-01-16 22:13 ` Junio C Hamano
2022-01-17 18:14 ` Elijah Newren
2022-01-17 19:40 ` Junio C Hamano
2022-01-18 17:56 ` Lessley Dennington
2022-01-22 1:07 ` Lessley Dennington
2022-01-22 1:08 ` Lessley Dennington
2022-01-22 2:11 ` Lessley Dennington
2022-01-18 21:02 ` SZEDER Gábor
2022-01-18 21:43 ` Elijah Newren
2022-01-18 17:59 ` Lessley Dennington
2022-01-18 22:22 ` SZEDER Gábor
2022-01-18 23:30 ` Elijah Newren
2022-01-10 18:59 ` [PATCH v3 3/3] sparse-checkout: limit tab completion to a single level Lessley Dennington via GitGitGadget
2022-01-12 23:43 ` Lessley Dennington
2022-01-13 0:00 ` Junio C Hamano
2022-01-13 0:38 ` Elijah Newren
2022-01-13 19:02 ` Lessley Dennington
2022-01-10 20:38 ` [PATCH v3 0/3] sparse checkout: custom bash completion updates Elijah Newren
2022-01-11 17:17 ` Lessley Dennington
2022-01-11 19:45 ` Taylor Blau
2022-01-12 18:35 ` Lessley Dennington
2022-01-27 21:21 ` [PATCH v4 0/3] completion: sparse-checkout updates Lessley Dennington via GitGitGadget
2022-01-27 21:21 ` [PATCH v4 1/3] completion: add sparse-checkout tests Lessley Dennington via GitGitGadget
2022-01-28 0:08 ` Elijah Newren
2022-01-28 1:56 ` Junio C Hamano
2022-01-28 2:04 ` Elijah Newren
2022-01-27 21:21 ` [PATCH v4 2/3] completion: sparse-checkout updates Lessley Dennington via GitGitGadget
2022-01-28 1:21 ` Elijah Newren
2022-01-31 20:03 ` Lessley Dennington
2022-01-31 21:37 ` Elijah Newren
2022-01-27 21:21 ` [PATCH v4 3/3] completion: ensure cone mode completion with multiple <TAB>s Lessley Dennington via GitGitGadget
2022-01-28 1:53 ` Elijah Newren
2022-02-03 20:44 ` [PATCH v5 0/3] completion: sparse-checkout updates Lessley Dennington via GitGitGadget
2022-02-03 20:44 ` [PATCH v5 1/3] completion: address sparse-checkout issues Lessley Dennington via GitGitGadget
2022-02-03 23:52 ` Elijah Newren
2022-02-04 0:34 ` Lessley Dennington
2022-02-03 20:44 ` [PATCH v5 2/3] completion: improve sparse-checkout cone mode directory completion Lessley Dennington via GitGitGadget
2022-02-03 20:44 ` [PATCH v5 3/3] completion: handle unusual characters for sparse-checkout Lessley Dennington via GitGitGadget
2022-02-03 23:58 ` Elijah Newren
2022-02-04 0:37 ` Lessley Dennington
2022-02-04 4:25 ` Ævar Arnfjörð Bjarmason
2022-02-04 21:55 ` Junio C Hamano
2022-02-03 21:48 ` [PATCH v5 0/3] completion: sparse-checkout updates Junio C Hamano
2022-02-03 22:17 ` Lessley Dennington
2022-02-03 23:28 ` Junio C Hamano
2022-02-03 23:59 ` Lessley Dennington
2022-02-04 2:43 ` Lessley Dennington
2022-02-04 3:28 ` Lessley Dennington
2022-02-04 4:21 ` Ævar Arnfjörð Bjarmason
2022-02-04 3:26 ` [PATCH v6 " Lessley Dennington via GitGitGadget
2022-02-04 3:26 ` [PATCH v6 1/3] completion: address sparse-checkout issues Lessley Dennington via GitGitGadget
2022-02-04 3:26 ` [PATCH v6 2/3] completion: improve sparse-checkout cone mode directory completion Lessley Dennington via GitGitGadget
2022-02-04 3:26 ` [PATCH v6 3/3] completion: handle unusual characters for sparse-checkout Lessley Dennington via GitGitGadget
2022-02-04 6:05 ` [PATCH v6 0/3] completion: sparse-checkout updates Elijah Newren
2022-02-04 17:04 ` Junio C Hamano
2022-02-04 17:55 ` Elijah Newren
2022-02-04 19:54 ` Junio C Hamano
2022-02-04 20:01 ` Elijah Newren
2022-02-04 21:47 ` Junio C Hamano
2022-02-07 17:31 ` [PATCH v7 " Lessley Dennington via GitGitGadget
2022-02-07 17:31 ` [PATCH v7 1/3] completion: address sparse-checkout issues Lessley Dennington via GitGitGadget
2022-02-07 17:31 ` [PATCH v7 2/3] completion: improve sparse-checkout cone mode directory completion Lessley Dennington via GitGitGadget
2022-02-07 17:31 ` [PATCH v7 3/3] completion: handle unusual characters for sparse-checkout Lessley Dennington via GitGitGadget
2022-04-06 9:42 ` Adam Dinwoodie
2022-02-08 4:16 ` [PATCH v7 0/3] completion: sparse-checkout updates Elijah Newren
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