Re: [PATCH] test: fix for COLUMNS and bash 5

On Fri, Aug 06 2021, Junio C Hamano wrote:

SZEDER Gábor [off-list ref] writes:

quoted

quoted

@@ -419,6 +419,12 @@ COLUMNS=80

COLUMNS is set just before the start of the hunk context ...

quoted

 export LANG LC_ALL PAGER TZ COLUMNS
 EDITOR=:

... so these two "commands" above are executed while COLUMNS is
already set but checkwinsize is not yet disabled.  The reason I put
quotes around that commands is that while exporting and setting
variables are indeed commands as defined in the POSIX Shell Command
Language specs, Bash with checkwinsize enabled only "checks the window
size after each extern (non-builtin) command" (quoting 'man bash').

So even though it is safe to execute these variable setting and
exporting commands after setting COLUMNS but disabling checkwinsize, I
think it would be prudent to disable checkwinsize before initializing
COLUMNS.  (And perhaps adding "non-builtin" to the comment below.)

OK.  I tend to agree that a less invasive solution like this is
preferred over adding new code to only help tests in the everyday
binary, especially this close to the final.  Taking the above, I'd
queue this and hopefully I can merge it by -rc2 at the latest.

Now that we're post-release are you interested in a re-roll of
https://lore.kernel.org/git/cover-v3-0.3-00000000000-20210804T230335Z-avarab@gmail.com/ (local)
+ removal of the bash-specific checkwinsize added here, or would you
like to just keep Felipe's version which you integrated as 390b44eb2bc
(test: fix for COLUMNS and bash 5, 2021-08-05).

Either works for me, just poking to see whether I should drop this from
my local TODO list or not...