From 08a3651fe7f3163acbac461e0daf370329a1d332 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?SZEDER=20G=C3=A1bor?= <szeder@ira.uka.de>
Date: Mon, 30 Nov 2015 12:40:53 +0100
Subject: Make error message after failing commit_lock_file() less confusing
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The error message after a failing commit_lock_file() call sometimes
looks like this, causing confusion:

  $ git remote add remote git@server.com/repo.git
  error: could not commit config file .git/config
  # Huh?!
  # I didn't want to commit anything, especially not my config file!

While in the narrow context of the lockfile module using the verb
'commit' in the error message makes perfect sense, in the broader
context of git the word 'commit' already has a very specific meaning,
hence the confusion.

Reword these error messages to say "could not write" instead of "could
not commit".

While at it, include strerror in the error messages after writing the
config file or the credential store fails to provide some information
about the cause of the failure, and update the style of the error
message after writing the reflog fails to match surrounding error
messages (i.e. no '' around the pathname and no () around the error
description).

Signed-off-by: SZEDER Gábor <szeder@ira.uka.de>
Signed-off-by: Jeff King <peff@peff.net>

diff --git a/config.c b/config.c
index 248a21a..86a5eb2 100644
--- a/config.c
+++ b/config.c
@@ -2144,7 +2144,8 @@ int git_config_set_multivar_in_file(const char *config_filename,
 	}
 
 	if (commit_lock_file(lock) < 0) {
-		error("could not commit config file %s", config_filename);
+		error("could not write config file %s: %s", config_filename,
+		      strerror(errno));
 		ret = CONFIG_NO_WRITE;
 		lock = NULL;
 		goto out_free;
@@ -2330,7 +2331,8 @@ int git_config_rename_section_in_file(const char *config_filename,
 	fclose(config_file);
 unlock_and_out:
 	if (commit_lock_file(lock) < 0)
-		ret = error("could not commit config file %s", config_filename);
+		ret = error("could not write config file %s: %s",
+			    config_filename, strerror(errno));
 out:
 	free(filename_buf);
 	return ret;
diff --git a/credential-store.c b/credential-store.c
index 00aea3a..fc67d16 100644
--- a/credential-store.c
+++ b/credential-store.c
@@ -64,7 +64,8 @@ static void rewrite_credential_file(const char *fn, struct credential *c,
 		print_line(extra);
 	parse_credential_file(fn, c, NULL, print_line);
 	if (commit_lock_file(&credential_lock) < 0)
-		die_errno("unable to commit credential store");
+		die_errno("unable to write credential store: %s",
+			  strerror(errno));
 }
 
 static void store_credential_file(const char *fn, struct credential *c)
diff --git a/fast-import.c b/fast-import.c
index 6c7c3c9..b141535 100644
--- a/fast-import.c
+++ b/fast-import.c
@@ -1821,7 +1821,7 @@ static void dump_marks(void)
 
 	dump_marks_helper(f, 0, marks);
 	if (commit_lock_file(&mark_lock)) {
-		failure |= error("Unable to commit marks file %s: %s",
+		failure |= error("Unable to write file %s: %s",
 			export_marks_file, strerror(errno));
 		return;
 	}
diff --git a/refs.c b/refs.c
index 4e15f60..9ac9a67 100644
--- a/refs.c
+++ b/refs.c
@@ -4643,7 +4643,7 @@ int reflog_expire(const char *refname, const unsigned char *sha1,
 					get_lock_file_path(lock->lk));
 			rollback_lock_file(&reflog_lock);
 		} else if (commit_lock_file(&reflog_lock)) {
-			status |= error("unable to commit reflog '%s' (%s)",
+			status |= error("unable to write reflog %s: %s",
 					log_file, strerror(errno));
 		} else if (update && commit_ref(lock)) {
 			status |= error("couldn't set %s", lock->ref_name);
-- 
cgit v0.10.2-6-g49f6