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From: Stefan Beller <sbeller@google.com>
To: git@vger.kernel.org
Cc: Stefan Beller <sbeller@google.com>
Subject: [PATCH] config: fix case sensitive subsection names on writing
Date: Fri, 27 Jul 2018 13:51:17 -0700
Message-ID: <20180727205117.243770-1-sbeller@google.com> (raw)

A use reported a submodule issue regarding strange case indentation
issues, but it could be boiled down to the following test case:

  $ git init test  && cd test
  $ git config foo."Bar".key test
  $ git config foo."bar".key test
  $ tail -n 3 .git/config
  [foo "Bar"]
        key = test
        key = test

Sub sections are case sensitive and we have a test for correctly reading
them. However we do not have a test for writing out config correctly with
case sensitive subsection names, which is why this went unnoticed in
6ae996f2acf (git_config_set: make use of the config parser's event
stream, 2018-04-09)

Make the subsection case sensitive and provide a test for both reading
and writing.

Reported-by: JP Sugarbroad <jpsugar@google.com>
Signed-off-by: Stefan Beller <sbeller@google.com>
---
 config.c          |  2 +-
 t/t1300-config.sh | 18 ++++++++++++++++++
 2 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/config.c b/config.c
index 3aacddfec4b..3ded92b678b 100644
--- a/config.c
+++ b/config.c
@@ -2374,7 +2374,7 @@ static int store_aux_event(enum config_event_t type,
 		store->is_keys_section =
 			store->parsed[store->parsed_nr].is_keys_section =
 			cf->var.len - 1 == store->baselen &&
-			!strncasecmp(cf->var.buf, store->key, store->baselen);
+			!strncmp(cf->var.buf, store->key, store->baselen);
 		if (store->is_keys_section) {
 			store->section_seen = 1;
 			ALLOC_GROW(store->seen, store->seen_nr + 1,
diff --git a/t/t1300-config.sh b/t/t1300-config.sh
index 03c223708eb..8325d4495f4 100755
--- a/t/t1300-config.sh
+++ b/t/t1300-config.sh
@@ -1218,6 +1218,24 @@ test_expect_success 'last one wins: three level vars' '
 	test_cmp expect actual
 '
 
+test_expect_success 'setting different case subsections ' '
+	test_when_finished "rm -f caseSens caseSens_actual caseSens_expect" &&
+
+	# v.a.r and v.A.r are not the same variable, as the middle
+	# level of a three-level configuration variable name is
+	# case sensitive.
+	git config -f caseSens v."A".r VAL &&
+	git config -f caseSens v."a".r val &&
+
+	echo VAL >caseSens_expect &&
+	git config -f caseSens v."A".r >caseSens_actual &&
+	test_cmp caseSens_expect caseSens_actual &&
+
+	echo val >caseSens_expect &&
+	git config -f caseSens v."a".r >caseSens_actual &&
+	test_cmp caseSens_expect caseSens_actual
+'
+
 for VAR in a .a a. a.0b a."b c". a."b c".0d
 do
 	test_expect_success "git -c $VAR=VAL rejects invalid '$VAR'" '
-- 
2.18.0.345.g5c9ce644c3-goog


             reply index

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-07-27 20:51 Stefan Beller [this message]
2018-07-27 21:21 ` Brandon Williams
2018-07-27 21:39   ` Junio C Hamano
2018-07-27 23:35     ` Stefan Beller
2018-07-27 23:36       ` Stefan Beller
2018-07-27 23:37         ` Stefan Beller
2018-07-28  1:01         ` Junio C Hamano
2018-07-28  3:52           ` Stefan Beller
2018-07-28 10:53             ` Jeff King
2018-07-28  1:37         ` Junio C Hamano
2018-07-30 12:49           ` Johannes Schindelin
2018-07-30 23:04             ` [PATCH 0/3] " Stefan Beller
2018-07-30 23:04               ` [PATCH 1/3] t1300: document current behavior of setting options Stefan Beller
2018-07-30 23:04               ` [PATCH 2/3] config: fix case sensitive subsection names on writing Stefan Beller
2018-07-31 20:16                 ` Junio C Hamano
2018-07-30 23:04               ` [PATCH 3/3] config: treat section case insensitive in store_aux_event Stefan Beller
2018-07-31 15:16               ` [PATCH 0/3] config: fix case sensitive subsection names on writing Junio C Hamano
2018-08-01 19:34                 ` [PATCH 0/3] sb/config-write-fix done without robbing Peter Stefan Beller
2018-08-01 19:34                   ` [PATCH 1/3] t1300: document current behavior of setting options Stefan Beller
2018-08-01 19:34                   ` [PATCH 2/3] config: fix case sensitive subsection names on writing Stefan Beller
2018-08-01 21:01                     ` Ramsay Jones
2018-08-01 22:26                       ` Junio C Hamano
2018-08-01 22:51                     ` Junio C Hamano
2018-08-03  0:30                       ` Stefan Beller
2018-08-03 15:51                         ` Junio C Hamano
2018-08-01 19:34                   ` [PATCH 3/3] git-config: document accidental multi-line setting in deprecated syntax Stefan Beller
2018-08-01 19:58                   ` [PATCH 0/3] sb/config-write-fix done without robbing Peter Eric Sunshine
2018-08-02 19:49                   ` Junio C Hamano
2018-08-03  0:34                   ` [PATCH 0/3] Reroll of sb/config-write-fix Stefan Beller
2018-08-03  0:34                     ` [PATCH 1/3] t1300: document current behavior of setting options Stefan Beller
2018-08-03  0:34                     ` [PATCH 2/3] config: fix case sensitive subsection names on writing Stefan Beller
2018-08-03  0:34                     ` [PATCH 3/3] git-config: document accidental multi-line setting in deprecated syntax Stefan Beller
2018-07-27 21:37 ` [PATCH] config: fix case sensitive subsection names on writing Junio C Hamano

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