From d05deb95484665d5d465bdc9651ab1b79f13126f Mon Sep 17 00:00:00 2001
From: Pieter de Bie <pdebie@ai.rug.nl>
Date: Sun, 13 Sep 2009 23:04:48 +0200
Subject: [PATCH] PBGitRevSpecifier: tweak "isSimpleRef" a bit

For example, HEAD is a simple ref, but "stable..HEAD" isn't.
---
 PBGitRevSpecifier.m | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/PBGitRevSpecifier.m b/PBGitRevSpecifier.m
index ded8575..2865fd7 100644
--- a/PBGitRevSpecifier.m
+++ b/PBGitRevSpecifier.m
@@ -47,9 +47,19 @@
 	[revspec setDescription:@"Local branches"];
 	return revspec;
 }
+
 - (BOOL) isSimpleRef
 {
-	return ([parameters count] == 1 && ![[parameters objectAtIndex:0] hasPrefix:@"-"]);
+	if ([parameters count] > 1)
+		return NO;
+
+	NSString *param = [parameters objectAtIndex:0];
+	if ([param hasPrefix:@"-"] ||
+		[param rangeOfCharacterFromSet:[NSCharacterSet characterSetWithCharactersInString:@"^@{}~:"]].location != NSNotFound ||
+		[param rangeOfString:@".."].location != NSNotFound)
+		return NO;
+
+	return YES;
 }
 
 - (NSString*) simpleRef