parse-options: allow positivation of options starting, with no-

Long options can be negated by adding no- right after the leading
two dashes. This is useful e.g. to override options set by aliases.

For options that are defined to start with no- already, this looks
a bit funny. Allow such options to also be negated by removing the
prefix.

The following thirteen options are affected:

	apply          --no-add
	bisect--helper --no-checkout
	checkout-index --no-create
	clone          --no-checkout --no-hardlinks
	commit         --no-verify   --no-post-rewrite
	format-patch   --no-binary
	hash-object    --no-filters
	read-tree      --no-sparse-checkout
	revert         --no-commit
	show-branch    --no-name
	update-ref     --no-deref

The following five are NOT affected because they are defined with
PARSE_OPT_NONEG or the non-negated version is defined as well:

	branch       --no-merged
	format-patch --no-stat             --no-numbered
	update-index --no-assume-unchanged --no-skip-worktree

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/t/t0040-parse-options.sh b/t/t0040-parse-options.sh
index ca25e58..a44bcb9 100755
--- a/t/t0040-parse-options.sh
+++ b/t/t0040-parse-options.sh
@@ -107,7 +107,7 @@ test_expect_success 'OPT_BOOL() negation #2' 'check boolean: 0 -D --no-no-doubt'
 test_expect_success 'OPT_BOOL() no negation #1' 'check_unknown --fear'
 test_expect_success 'OPT_BOOL() no negation #2' 'check_unknown --no-no-fear'
 
-test_expect_failure 'OPT_BOOL() positivation' 'check boolean: 0 -D --doubt'
+test_expect_success 'OPT_BOOL() positivation' 'check boolean: 0 -D --doubt'
 
 cat > expect << EOF
 boolean: 2