[PATCH 2/2] completion: simplify query for config variables

["SZEDER Gábor" <szeder@ira.uka.de>]

To get the name of all config variables in a given section we perform a
'git config --get-regex' query for all config variables containing the
name of that section, and then filter its output through a case statement
to throw away those that though contain but don't start with the given
section.

Modify the regex to match only at the beginning, so the case statement
becomes unnecessary and we can get rid of it.  Add a test to check that a
match in the middle doesn't fool us.

Signed-off-by: SZEDER Gábor <szeder@ira.uka.de>
---
 contrib/completion/git-completion.bash | 10 +++-------
 t/t9902-completion.sh                  | 12 ++++++++++++
 2 files changed, 15 insertions(+), 7 deletions(-)

diff --git a/contrib/completion/git-completion.bash b/contrib/completion/git-completion.bash
index 6973620857..63f960b33d 100644
--- a/contrib/completion/git-completion.bash
+++ b/contrib/completion/git-completion.bash
@@ -745,13 +745,9 @@ __git_compute_porcelain_commands ()
 __git_get_config_variables ()
 {
 	local section="$1" i IFS=$'\n'
-	for i in $(git --git-dir="$(__gitdir)" config --get-regexp "$section\..*" 2>/dev/null); do
-		case "$i" in
-		$section.*)
-			i="${i#$section.}"
-			echo "${i/ */}"
-			;;
-		esac
+	for i in $(git --git-dir="$(__gitdir)" config --get-regexp "^$section\..*" 2>/dev/null); do
+		i="${i#$section.}"
+		echo "${i/ */}"
 	done
 }
 
diff --git a/t/t9902-completion.sh b/t/t9902-completion.sh
index 07f2478c9b..2ba62fbc17 100755
--- a/t/t9902-completion.sh
+++ b/t/t9902-completion.sh
@@ -370,6 +370,18 @@ test_expect_success '__git_remotes - list remotes from $GIT_DIR/remotes and from
 	test_cmp expect actual
 '
 
+test_expect_success '__git_get_config_variables' '
+	cat >expect <<-EOF &&
+	name-1
+	name-2
+	EOF
+	test_config interesting.name-1 good &&
+	test_config interesting.name-2 good &&
+	test_config subsection.interesting.name-3 bad &&
+	__git_get_config_variables interesting >actual &&
+	test_cmp expect actual
+'
+
 test_expect_success '__git_pretty_aliases' '
 	cat >expect <<-EOF &&
 	author
-- 
1.9.5.msysgit.0