Show previous commit message when amending

PBGitCommitController.m

@@ -19,6 +19,7 @@
 - (void)commitStatusUpdated:(NSNotification *)notification;
 - (void)commitFinished:(NSNotification *)notification;
 - (void)commitFailed:(NSNotification *)notification;
+- (void)amendCommit:(NSNotification *)notification;
 @end
 
 @implementation PBGitCommitController
@@ -37,6 +38,7 @@
 	[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(commitStatusUpdated:) name:PBGitIndexCommitStatus object:index];
 	[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(commitFinished:) name:PBGitIndexFinishedCommit object:index];
 	[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(commitFailed:) name:PBGitIndexCommitFailed object:index];
+	[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(amendCommit:) name:PBGitIndexAmendMessageAvailable object:index];
 
 	return self;
 }
@@ -56,11 +58,13 @@
 	[cachedFilesController setSortDescriptors:[NSArray arrayWithObject:
 		[[NSSortDescriptor alloc] initWithKey:@"path" ascending:true]]];
 }
+
 - (void) removeView
 {
 	[webController closeView];
 	[super finalize];
 }
+
 - (NSResponder *)firstResponder;
 {
 	return commitMessageView;
@@ -151,5 +155,16 @@
 	[[repository windowController] showMessageSheet:@"Commit failed" infoText:reason];
 }
 
+- (void)amendCommit:(NSNotification *)notification
+{
+	// Replace commit message with the old one if it's less than 3 characters long.
+	// This is just a random number.
+	if ([[commitMessageView string] length] > 3)
+		return;
+	
+	NSString *message = [[notification userInfo] objectForKey:@"message"];
+	commitMessageView.string = message;
+}
+
 
 @end

PBGitIndex.h

@@ -19,6 +19,7 @@ extern NSString *PBGitIndexCommitStatus;
 extern NSString *PBGitIndexCommitFailed;
 extern NSString *PBGitIndexFinishedCommit;
 
+extern NSString *PBGitIndexAmendMessageAvailable;
 // Represents a git index for a given work tree.
 // As a single git repository can have multiple trees,
 // the tree has to be given explicitly, even though

PBGitIndex.m

@@ -21,6 +21,7 @@ NSString *PBGitIndexCommitStatus = @"PBGitIndexCommitStatus";
 NSString *PBGitIndexCommitFailed = @"PBGitIndexCommitFailed";
 NSString *PBGitIndexFinishedCommit = @"PBGitIndexFinishedCommit";
 
+NSString *PBGitIndexAmendMessageAvailable = @"PBGitIndexAmendMessageAvailable";
 
 @interface PBGitIndex (IndexRefreshMethods)
 
@@ -93,6 +94,16 @@ NSString *PBGitIndexFinishedCommit = @"PBGitIndexFinishedCommit";
 							[match objectAtIndex:2], @"GIT_AUTHOR_EMAIL",
 							[match objectAtIndex:3], @"GIT_AUTHOR_DATE",
 							nil];
+
+	// Find the commit message
+	NSRange r = [message rangeOfString:@"\n\n"];
+	if (r.location != NSNotFound) {
+		NSString *commitMessage = [message substringFromIndex:r.location + 2];
+		[[NSNotificationCenter defaultCenter] postNotificationName:PBGitIndexAmendMessageAvailable
+															object: self
+														  userInfo:[NSDictionary dictionaryWithObject:commitMessage forKey:@"message"]];
+	}
+	
 }
 
 - (void)refresh