trace: cosmetic fixes for error messages

The error messages for the trace code are often multi-line;
the first line gets a nice "warning:", but the rest are
left-aligned. Let's give them an indentation to make sure
they stand out as a unit.

While we're here, let's also downcase the first letter of
each error (our usual style), and break up a long line of
advice (since we're already using multiple lines, one more
doesn't hurt).

We also replace "What does 'foo' for GIT_TRACE mean?". While
cute, it's probably a good idea to give more context, and
follow our usual styles. So it's now "unknown trace value
for 'GIT_TRACE': foo".

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/trace.c b/trace.c
index 6a77e4df037cfe48694d5b686bcc291243cb8dd3..4d68eb522f0838c7e9481b30cd004091ef347632 100644 (file)
--- a/trace.c
+++ b/trace.c
@@ -61,8 +61,8 @@ static int get_trace_fd(struct trace_key *key)
        else if (is_absolute_path(trace)) {
                int fd = open(trace, O_WRONLY | O_APPEND | O_CREAT, 0666);
                if (fd == -1) {
-                       warning("Could not open '%s' for tracing: %s\n"
-                               "Defaulting to tracing on stderr...",
+                       warning("could not open '%s' for tracing: %s\n"
+                               "         Defaulting to tracing on stderr...",
                                trace, strerror(errno));
                        key->fd = STDERR_FILENO;
                } else {
@@ -70,11 +70,11 @@ static int get_trace_fd(struct trace_key *key)
                        key->need_close = 1;
                }
        } else {
-               warning("What does '%s' for %s mean?\n"
-                       "If you want to trace into a file, then please set "
-                       "%s to an absolute pathname (starting with /).\n"
-                       "Defaulting to tracing on stderr...",
-                       trace, key->key, key->key);
+               warning("unknown trace value for '%s': %s\n"
+                       "         If you want to trace into a file, then please set %s\n"
+                       "         to an absolute pathname (starting with /)\n"
+                       "         Defaulting to tracing on stderr...",
+                       key->key, trace, key->key);
                key->fd = STDERR_FILENO;
        }
 
@@ -93,7 +93,7 @@ void trace_disable(struct trace_key *key)
        key->need_close = 0;
 }
 
-static const char err_msg[] = "Could not trace into fd given by "
+static const char err_msg[] = "could not trace into fd given by "
        "GIT_TRACE environment variable";
 
 static int prepare_trace_line(const char *file, int line,