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OS X Screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

To capture the video (filesize: 19MB), using the free "QuickTime Player" application:

	# The trick is to link the DeviceSupport folder from the beta to the stable version.
	# sudo needed if you run the Mac App Store version. Always download the dmg instead... you'll thank me later :)

	# Support iOS 15 devices (Xcode 13.0) with Xcode 12.5:
	sudo ln -s /Applications/Xcode-beta.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport/15.0 /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport

	# Then restart Xcode and reconnect your devices. You will need to do that for every beta of future iOS versions

	# (A similar approach works for older versions too, just change the version number after DeviceSupport)

	/**
	* The following preprocessor macros can be used to adopt the new nullability annotations and generics
	* features available in Xcode 7, while maintaining backwards compatibility with earlier versions of
	* Xcode that do not support these features.
	*/

	#if __has_feature(nullability)
	# define __ASSUME_NONNULL_BEGIN NS_ASSUME_NONNULL_BEGIN
	# define __ASSUME_NONNULL_END NS_ASSUME_NONNULL_END
	# define __NULLABLE nullable

	//
	// NSAttributedString+format.m
	// Chatterbox
	//
	// Created by Brent Royal-Gordon on 2/7/14.
	// Copyright (c) 2014 Architechies. All rights reserved.
	//

	#import "NSAttributedString+format.h"

	@implementation UITextView (RSExtras)


	static BOOL stringCharacterIsAllowedAsPartOfLink(NSString *s) {

	/*[s length] is assumed to be 0 or 1. s may be nil.
	Totally not a strict check.*/

	if (s == nil \|\| [s length] < 1)
	return NO;

	NSUInteger PSPDFHashFromCGRect(CGRect rect) {
	return ((NSUInteger )&rect.origin.x << 10 ^ (NSUInteger )&rect.origin.y) + ((NSUInteger )&rect.size.width << 10 ^ (NSUInteger )&rect.size.height);
	}