From: Junio C Hamano <gitster@pobox.com>
To: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Cc: Taylor Blau <me@ttaylorr.com>,
Johannes Schindelin via GitGitGadget <gitgitgadget@gmail.com>,
git@vger.kernel.org
Subject: Re: [PATCH 1/1] check-docs: fix for setups where executables have an extension
Date: Sun, 24 Mar 2019 21:54:50 +0900 [thread overview]
Message-ID: <xmqqbm20ph45.fsf@gitster-ct.c.googlers.com> (raw)
In-Reply-To: <nycvar.QRO.7.76.6.1903241055230.45@tvgsbejvaqbjf.bet> (Johannes Schindelin's message of "Sun, 24 Mar 2019 11:02:27 +0100 (STD)")
Johannes Schindelin <Johannes.Schindelin@gmx.de> writes:
> Sharp eyes, and a *very* good point. The double space is actually required
> for this patch to work as intended. I added the following explanation to
> the commit message:
>
> Note that `$(ALL_COMMANDS)` starts with a space, and that is rather
> crucial for the `while read how cmd` loop: some of the input lines do
> not actually have the form `<how> <cmd>`, but only `<cmd>`, therefore
> `$cmd` evaluates to the empty string, and when we are looking for
> `* $cmd *` in ` $(ALL_COMMANDS)`, we do find it because the latter
> starts with a double space.
> In other words, the double space helps us skip the lines that list
> only a command.
That sounds more like a bug in the existing set-up even before your
patch (in fact, these lines are probably from 2007 or so, long
before you started touching our top-level Makefile heavily). If we
want to ignore lines with only one token, I'd rather see it
explicitly done, e.g.
... generate data ... |
while read how cmd
do
# skip a line with a single token
case "$cmd" in "") continue ;; esac
# is $cmd part of the known command list?
case " $(ALL_COMMANDS) " in
*" $cmd "*) ;; # skip
*) echo ... warning ... ;;
esac
done
instead of relying on "if $cmd is empty, then SP + $cmd + SP makes
double space, so let's have double space somewhere in the list of
known commands" cuteness.
Thanks.
next prev parent reply other threads:[~2019-03-24 12:58 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-13 11:56 [PATCH 0/1] Fix make check-docs on Windows Johannes Schindelin via GitGitGadget
2019-03-13 11:56 ` [PATCH 1/1] check-docs: fix for setups where executables have an extension Johannes Schindelin via GitGitGadget
2019-03-14 1:54 ` Junio C Hamano
2019-03-22 18:43 ` Taylor Blau
2019-03-24 10:02 ` Johannes Schindelin
2019-03-24 12:54 ` Junio C Hamano [this message]
2019-03-25 21:08 ` Johannes Schindelin
2019-03-25 21:41 ` [PATCH v2 0/5] Fix make check-docs on Windows Johannes Schindelin via GitGitGadget
2019-03-25 21:41 ` [PATCH v2 1/5] docs: move gitremote-helpers into section 7 Johannes Schindelin via GitGitGadget
2019-03-25 21:41 ` [PATCH v2 2/5] docs: do not document the `git remote-testgit` command Johannes Schindelin via GitGitGadget
2019-03-26 14:39 ` Ævar Arnfjörð Bjarmason
2019-03-27 22:23 ` Johannes Schindelin
2019-03-29 14:48 ` Johannes Schindelin
2019-03-25 21:41 ` [PATCH v2 3/5] check-docs: really look at the documented commands again Johannes Schindelin via GitGitGadget
2019-03-25 21:41 ` [PATCH v2 4/5] check-docs: do not expect guide pages to correspond to commands Johannes Schindelin via GitGitGadget
2019-03-25 21:41 ` [PATCH v2 5/5] check-docs: fix for setups where executables have an extension Johannes Schindelin via GitGitGadget
2019-03-26 14:38 ` [PATCH v2 0/5] Fix make check-docs on Windows Johannes Schindelin
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