git-svn log: fix ascending revision ranges

Fixed typo in Git::SVN::Log::git_svn_log_cmd().  Previously a command like
"git-svn log -r1:4" would only show a commit log separator.

Added tests for ascending and descending revision ranges.

Signed-off-by: David D Kilzer <ddkilzer@kilzer.net>
Acked-by: Eric Wong <normalperson@yhbt.net>

git-svn.perl

@@ -3798,7 +3798,7 @@ sub git_svn_log_cmd {
 		$c_max = $gs->rev_db_get($r_max);
 		$c_min = $gs->rev_db_get($r_min);
 		if (defined $c_min && defined $c_max) {
-			if ($r_max > $r_max) {
+			if ($r_max > $r_min) {
 				push @cmd, "$c_min..$c_max";
 			} else {
 				push @cmd, "$c_max..$c_min";

t/t9116-git-svn-log.sh

@@ -45,4 +45,18 @@ test_expect_success 'run log against a from trunk' "
 	git svn log -r3 a | grep ^r3
 	"
 
+printf 'r2 \nr4 \n' > expected-range-r2-r4
+
+test_expect_success 'test ascending revision range' "
+	git reset --hard trunk &&
+	git svn log -r 1:4 | grep '^r[0-9]' | cut -d'|' -f1 | diff -u expected-range-r2-r4 -
+	"
+
+printf 'r4 \nr2 \n' > expected-range-r4-r2
+
+test_expect_success 'test descending revision range' "
+	git reset --hard trunk &&
+	git svn log -r 4:1 | grep '^r[0-9]' | cut -d'|' -f1 | diff -u expected-range-r4-r2 -
+	"
+
 test_done