Add selftest for 'git submodule foreach'

diff --git a/builtin-mailsplit.c b/builtin-mailsplit.c
index 71f3b3b8741e505fc652e6c74c75972f19211f71..ad5f6b593df45f01360f3daa8b37d024ee793e9e 100644 (file)
--- a/builtin-mailsplit.c
+++ b/builtin-mailsplit.c
@@ -81,7 +81,7 @@ static int split_one(FILE *mbox, const char *name, int allow_bare)
 
        fd = open(name, O_WRONLY | O_CREAT | O_EXCL, 0666);
        if (fd < 0)
-               die("cannot open output file %s", name);
+               die_errno("cannot open output file '%s'", name);
        output = fdopen(fd, "w");
 
        /* Copy it out, while searching for a line that begins with
@@ -91,7 +91,7 @@ static int split_one(FILE *mbox, const char *name, int allow_bare)
                int is_partial = len && buf[len-1] != '\n';
 
                if (fwrite(buf, 1, len, output) != len)
-                       die("cannot write output");
+                       die_errno("cannot write output");
 
                len = read_line_with_nul(buf, sizeof(buf), mbox);
                if (len == 0) {
@@ -99,7 +99,7 @@ static int split_one(FILE *mbox, const char *name, int allow_bare)
                                status = 1;
                                break;
                        }
-                       die("cannot read mbox");
+                       die_errno("cannot read mbox");
                }
                if (!is_partial && !is_bare && is_from_line(buf, len))
                        break; /* done with one message */