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[PATCH 1/2] submodule: ignore trailing slash on superproject URL

From
Stefan Beller <sbeller@google.com>
Date
Oct 10, 2016, 17:56 UTC
Message-ID
<20161010175611.1058-1-sbeller@google.com>

Before 63e95beb0 (2016-04-15, submodule: port resolve_relative_url from shell to C), it did not matter if the superprojects URL had a trailing slash or not. It was just chopped off as one of the first steps (The "remoteurl=${remoteurl%/}" near the beginning of resolve_relative_url(), which was removed in said commit).

When porting this to the C version, an off-by-one error was introduced and we did not check the actual last character to be a slash, but the NULL delimiter.

Reintroduce the behavior from before 63e95beb0, to ignore the trailing slash.

Reported-by: <venv21@gmail.com>
Helped-by: Dennis Kaarsemaker <dennis@kaarsemaker.net>
Signed-off-by: Stefan Beller <sbeller@google.com>
---
 builtin/submodule--helper.c | 6 ++++--
 t/t0060-path-utils.sh       | 1 +
 2 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/builtin/submodule--helper.c b/builtin/submodule--helper.c
index 444ec06..a7841a5 100644
--- a/builtin/submodule--helper.c
+++ b/builtin/submodule--helper.c
@@ -95,6 +95,8 @@ static int chop_last_dir(char **remoteurl, int is_relative)
  * NEEDSWORK: This works incorrectly on the domain and protocol part.
  * remote_url      url              outcome          expectation
  * http://a.com/b  ../c             http://a.com/c   as is
+ * http://a.com/b/ ../c             http://a.com/c   same as previous line, but
+ *                                                   ignore trailing slash in url
  * http://a.com/b  ../../c          http://c         error out
  * http://a.com/b  ../../../c       http:/c          error out
  * http://a.com/b  ../../../../c    http:c           error out
@@ -113,8 +115,8 @@ static char *relative_url(const char *remote_url,
 	struct strbuf sb = STRBUF_INIT;
 	size_t len = strlen(remoteurl);
 
-	if (is_dir_sep(remoteurl[len]))
-		remoteurl[len] = '\0';
+	if (is_dir_sep(remoteurl[len-1]))
+		remoteurl[len-1] = '\0';
 
 	if (!url_is_local_not_ssh(remoteurl) || is_absolute_path(remoteurl))
 		is_relative = 0;
diff --git a/t/t0060-path-utils.sh b/t/t0060-path-utils.sh
index bf2deee..82b98f8 100755
--- a/t/t0060-path-utils.sh
+++ b/t/t0060-path-utils.sh
@@ -319,6 +319,7 @@ test_submodule_relative_url "../" "foo/bar" "../submodule" "../foo/submodule"
 test_submodule_relative_url "../" "foo" "../submodule" "../submodule"
 
 test_submodule_relative_url "(null)" "../foo/bar" "../sub/a/b/c" "../foo/sub/a/b/c"
+test_submodule_relative_url "(null)" "../foo/bar/" "../sub/a/b/c" "../foo/sub/a/b/c"
 test_submodule_relative_url "(null)" "../foo/bar" "../submodule" "../foo/submodule"
 test_submodule_relative_url "(null)" "../foo/submodule" "../submodule" "../foo/submodule"
 test_submodule_relative_url "(null)" "../foo" "../submodule" "../submodule"
-- 
2.10.1.382.ga23ca1b.dirty
Next: Stefan Beller
Message 1 of 14 in “submodule: ignore trailing slash on superproject URL”
  1. 1/2 submodule: ignore trailing slash on superproject URLStefan Beller, Oct 10, 2016
  2. 2/2 submodule: ignore trailing slash in relative urlStefan Beller, Oct 10, 2016
  3. Dennis KaarsemakerOct 10, 2016
  4. Johannes SchindelinOct 12, 2016
  5. Stefan BellerOct 12, 2016
  6. Johannes SchindelinOct 13, 2016
  7. Junio C HamanoOct 17, 2016
  8. Stefan BellerOct 17, 2016
  9. Junio C HamanoOct 17, 2016
  10. Stefan BellerOct 17, 2016
  11. Junio C HamanoOct 17, 2016
  12. Johannes SixtOct 17, 2016
  13. Junio C HamanoOct 17, 2016
  14. Johannes SixtOct 18, 2016

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