git-p4: fix skipSubmitEdit regression

Commit 7c766e5 (git-p4: introduce skipSubmitEdit, 2011-12-04)
made it easier to automate submission to p4, but broke the most
common case.

Add a test for when the user really does edit and save the change
template, and fix the bug that causes the test to fail.

Also add a confirmation message when submission is cancelled.

Reported-by: Michael Horowitz <michael.horowitz@ieee.org>
Signed-off-by: Pete Wyckoff <pw@padd.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

contrib/fast-import/git-p4

@@ -872,13 +872,16 @@ class P4Submit(Command, P4UserMap):
         if gitConfig("git-p4.skipSubmitEditCheck") == "true":
             return True
 
-        if os.stat(template_file).st_mtime <= mtime:
-            while True:
-                response = raw_input("Submit template unchanged. Submit anyway? [y]es, [n]o (skip this patch) ")
-                if response == 'y':
-                    return True
-                if response == 'n':
-                    return False
+        # modification time updated means user saved the file
+        if os.stat(template_file).st_mtime > mtime:
+            return True
+
+        while True:
+            response = raw_input("Submit template unchanged. Submit anyway? [y]es, [n]o (skip this patch) ")
+            if response == 'y':
+                return True
+            if response == 'n':
+                return False
 
     def applyCommit(self, id):
         print "Applying %s" % (read_pipe("git log --max-count=1 --pretty=oneline %s" % id))
@@ -1062,6 +1065,7 @@ class P4Submit(Command, P4UserMap):
                         self.modifyChangelistUser(changelist, p4User)
             else:
                 # skip this patch
+                print "Submission cancelled, undoing p4 changes."
                 for f in editedFiles:
                     p4_revert(f)
                 for f in filesToAdd:

t/t9805-skip-submit-edit.sh

@@ -38,7 +38,7 @@ test_expect_success 'no config, unedited, say no' '
 		cd "$git" &&
 		echo line >>file1 &&
 		git commit -a -m "change 3 (not really)" &&
-		printf "bad response\nn\n" | "$GITP4" submit
+		printf "bad response\nn\n" | "$GITP4" submit &&
 		p4 changes //depot/... >wc &&
 		test_line_count = 2 wc
 	)
@@ -74,6 +74,28 @@ test_expect_success 'skipSubmitEditCheck' '
 	)
 '
 
+# check the normal case, where the template really is edited
+test_expect_success 'no config, edited' '
+	"$GITP4" clone --dest="$git" //depot &&
+	test_when_finished cleanup_git &&
+	ed="$TRASH_DIRECTORY/ed.sh" &&
+	test_when_finished "rm \"$ed\"" &&
+	cat >"$ed" <<-EOF &&
+		#!$SHELL_PATH
+		sleep 1
+		touch "\$1"
+		exit 0
+	EOF
+	chmod 755 "$ed" &&
+	(
+		cd "$git" &&
+		echo line >>file1 &&
+		git commit -a -m "change 5" &&
+		EDITOR="\"$ed\"" "$GITP4" submit &&
+		p4 changes //depot/... >wc &&
+		test_line_count = 5 wc
+	)
+'
 
 test_expect_success 'kill p4d' '
 	kill_p4d