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subtree: use "$*" instead of "$@" as appropriate 

"$*" is for when you want to concatenate the args together,
whitespace-separated; and "$@" is for when you want them to be separate
strings.

There are several places in subtree that erroneously use $@ when
concatenating args together into an error message.

For instance, if the args are argv[1]="dead" and argv[2]="beef", then
the line

    die "You must provide exactly one revision.  Got: '$@'"

surely intends to call 'die' with the argument

    argv[1]="You must provide exactly one revision.  Got: 'dead beef'"

however, because the line used $@ instead of $*, it will actually call
'die' with the arguments

    argv[1]="You must provide exactly one revision.  Got: 'dead"
    argv[2]="beef'"

This isn't a big deal, because 'die' concatenates its arguments together
anyway (using "$*").  But that doesn't change the fact that it was a
mistake to use $@ instead of $*, even though in the end $@ still ended
up doing the right thing.

Signed-off-by: Luke Shumaker <lukeshu@datawire.io>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Luke Shumaker 2021-04-27 15:17:36 -06:00 committed by Junio C Hamano
parent e2b11e4211
commit a94f911072
1 changed files with 3 additions and 3 deletions
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6
contrib/subtree/git-subtree.sh
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@ -58,14 +58,14 @@ progress () {
assert () {
if ! "$@"
then
die "assertion failed: " "$@"
die "assertion failed: $*"
fi
}
ensure_single_rev () {
if test $# -ne 1
then
die "You must provide exactly one revision. Got: '$@'"
die "You must provide exactly one revision. Got: '$*'"
fi
}
@ -690,7 +690,7 @@ cmd_add () {
cmd_add_repository "$@"
else
say >&2 "error: parameters were '$@'"
say >&2 "error: parameters were '$*'"
die "Provide either a commit or a repository and commit."
fi
}