diff mbox series

[v2] bisect: disable pager while invoking show-branch

Message ID pull.1003.v2.git.1627373560881.gitgitgadget@gmail.com (mailing list archive)
State New, archived
Headers show
Series [v2] bisect: disable pager while invoking show-branch | expand

Commit Message

Oded Shimon July 27, 2021, 8:12 a.m. UTC 
From: Oded Shimon <oded@istraresearch.com>

git-bisect uses show-branch for logging during the bisect process. If the user
sets an interactive pager for show-branch, this makes bisect hang (wait for
user input) unexpectedly - so we disable pager with -P.

It's possible that the user would set a pager for git-checkout as well, but an
interactive pager there would break many more scripts.

Signed-off-by: Oded Shimon <oded@istraresearch.com>
---
    Fix git-bisect when show-branch is configured to run with pager
    
    Signed-off-by: Oded Shimon oded@istraresearch.com

Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-1003%2Foded-ist%2Fmaster-v2
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-1003/oded-ist/master-v2
Pull-Request: https://github.com/gitgitgadget/git/pull/1003

Range-diff vs v1:

 1:  52eff18191b ! 1:  c193f3a556f Fix git-bisect when show-branch is configured to run with pager
     @@ Metadata
      Author: Oded Shimon <oded@istraresearch.com>
      
       ## Commit message ##
     -    Fix git-bisect when show-branch is configured to run with pager
     +    bisect: disable pager while invoking show-branch
     +
     +    git-bisect uses show-branch for logging during the bisect process. If the user
     +    sets an interactive pager for show-branch, this makes bisect hang (wait for
     +    user input) unexpectedly - so we disable pager with -P.
     +
     +    It's possible that the user would set a pager for git-checkout as well, but an
     +    interactive pager there would break many more scripts.
      
          Signed-off-by: Oded Shimon <oded@istraresearch.com>
      


 bisect.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)


base-commit: eb27b338a3e71c7c4079fbac8aeae3f8fbb5c687

Comments

Junio C Hamano July 27, 2021, 6:29 p.m. UTC | #1 
"Oded S via GitGitGadget" <gitgitgadget@gmail.com> writes:

> From: Oded Shimon <oded@istraresearch.com>
>
> git-bisect uses show-branch for logging during the bisect process. If the user
> sets an interactive pager for show-branch, this makes bisect hang (wait for
> user input) unexpectedly - so we disable pager with -P.
>
> It's possible that the user would set a pager for git-checkout as well, but an
> interactive pager there would break many more scripts.
>
> Signed-off-by: Oded Shimon <oded@istraresearch.com>
> ---

Nicely described.  Now we can discuss if the thought process behind
this change makes sense or not with such a clear description.

I do not know if "unexpectedly" is truly unexpected for those who
configure show-branch to page, though.  After all they wanted their
pager to kick in.

In any case, such users are probably better off configuring their
pager not to prompt and wait when the output is less than pageful
(e.g. "less" has "--quit-if-one-screen" option and 'F' in $LESS
environemnt variable triggers this behaviour).

The patch looks good to me.

Thanks.



> diff --git a/bisect.c b/bisect.c
> index af2863d044b..c02bcc3359f 100644
> --- a/bisect.c
> +++ b/bisect.c
> @@ -23,7 +23,7 @@ static struct oid_array skipped_revs;
>  static struct object_id *current_bad_oid;
>  
>  static const char *argv_checkout[] = {"checkout", "-q", NULL, "--", NULL};
> -static const char *argv_show_branch[] = {"show-branch", NULL, NULL};
> +static const char *argv_show_branch[] = {"-P", "show-branch", NULL, NULL};
>  
>  static const char *term_bad;
>  static const char *term_good;
> @@ -748,7 +748,7 @@ static enum bisect_error bisect_checkout(const struct object_id *bisect_rev, int
>  			return -abs(res);
>  	}
>  
> -	argv_show_branch[1] = bisect_rev_hex;
> +	argv_show_branch[2] = bisect_rev_hex;
>  	res = run_command_v_opt(argv_show_branch, RUN_GIT_CMD);
>  	/*
>  	 * Errors in `run_command()` itself, signaled by res < 0,
>
> base-commit: eb27b338a3e71c7c4079fbac8aeae3f8fbb5c687
diff mbox series

Patch

diff --git a/bisect.c b/bisect.c
index af2863d044b..c02bcc3359f 100644
--- a/bisect.c
+++ b/bisect.c
@@ -23,7 +23,7 @@  static struct oid_array skipped_revs;
 static struct object_id *current_bad_oid;
 
 static const char *argv_checkout[] = {"checkout", "-q", NULL, "--", NULL};
-static const char *argv_show_branch[] = {"show-branch", NULL, NULL};
+static const char *argv_show_branch[] = {"-P", "show-branch", NULL, NULL};
 
 static const char *term_bad;
 static const char *term_good;
@@ -748,7 +748,7 @@  static enum bisect_error bisect_checkout(const struct object_id *bisect_rev, int
 			return -abs(res);
 	}
 
-	argv_show_branch[1] = bisect_rev_hex;
+	argv_show_branch[2] = bisect_rev_hex;
 	res = run_command_v_opt(argv_show_branch, RUN_GIT_CMD);
 	/*
 	 * Errors in `run_command()` itself, signaled by res < 0,