split_cmdline: Allow caller to access error string
This allows the caller to add its own error message to that returned
by split_cmdline. Thus error output following a failed split_cmdline
can be of the form
fatal: Bad alias.test string: cmdline ends with \
rather than
error: cmdline ends with \
fatal: Bad alias.test string
Signed-off-by: Greg Brockman <gdb@mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/builtin/merge.c b/builtin/merge.c
index 37ce4f5..b488263 100644
--- a/builtin/merge.c
+++ b/builtin/merge.c
@@ -486,7 +486,8 @@
buf = xstrdup(v);
argc = split_cmdline(buf, &argv);
if (argc < 0)
- die("Bad branch.%s.mergeoptions string", branch);
+ die("Bad branch.%s.mergeoptions string: %s", branch,
+ split_cmdline_strerror(argc));
argv = xrealloc(argv, sizeof(*argv) * (argc + 2));
memmove(argv + 1, argv, sizeof(*argv) * (argc + 1));
argc++;
