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List: git
Subject: Re: [PATCH] git-submodule.sh: avoid "test <cond> -a/-o <cond>"
From: Junio C Hamano <gitster () pobox ! com>
Date: 2014-06-10 15:23:55
Message-ID: xmqq38fcbxf8.fsf () gitster ! dls ! corp ! google ! com
[Download RAW message or body]
Torsten Bögershausen <tboegi@web.de> writes:
> On 2014-06-10 14.28, Elia Pinto wrote:
> []
>> # before the first commit: compare with an empty tree
>> head=$(git hash-object -w -t tree --stdin </dev/null)
>> @@ -1056,13 +1056,17 @@ cmd_summary() {
>> while read mod_src mod_dst sha1_src sha1_dst status sm_path
>> do
>> # Always show modules deleted or type-changed (blob<->module)
>> - test $status = D -o $status = T && echo "$sm_path" && continue
>> + case "$status" in
>> + ([DT])
> Does this look strange? ^
> Should it be
> case "$status" in
> D|T)
Actually POSIX allows matching parentheses for case arm labels
(surprise!).
And some shells misparse
var=$( ... case arm) action ;; esac ... )
as if the ')' after the arm label closes the whole command
substitution.
Having said that, I'd prefer to see the following squashed into that
patch.
The first hunk is purely a bugfix. It used to be
if ! test -d "$sm_path"/.git -o -f "$sm_path"/.git
that is: unless "$sm_path/.git" is directory or file, do this.
And the rewrite broke that logic.
The second hunk is to avoid "case" that confuses without helping
readability that much.
I would also have preferred to see the echo to printf substitution
left out of this patch. There are other places where $sm_path is
echoed and fixing only one of them in an otherwise unrelated patch
feels wrong---it should be a separate follow-up patch, I would
think.
git-submodule.sh | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/git-submodule.sh b/git-submodule.sh
index d6a1dea..27ca7d5 100755
--- a/git-submodule.sh
+++ b/git-submodule.sh
@@ -832,7 +832,7 @@ Maybe you want to use 'update --init'?")"
continue
fi
- if ! test -d "$sm_path"/.git || test -f "$sm_path"/.git
+ if ! test -d "$sm_path"/.git && ! test -f "$sm_path"/.git
then
module_clone "$sm_path" "$name" "$url" "$reference" "$depth" || exit
cloned_modules="$cloned_modules;$name"
@@ -1056,11 +1056,11 @@ cmd_summary() {
while read mod_src mod_dst sha1_src sha1_dst status sm_path
do
# Always show modules deleted or type-changed (blob<->module)
- case "$status" in
- ([DT])
- printf '%s\n' "$sm_path" &&
+ if test "$status" = D || test "$status" = T
+ then
+ printf '%s\n' "$sm_path"
continue
- esac
+ fi
# Respect the ignore setting for --for-status.
if test -n "$for_status"
then
--
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