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+Xcode has a bad habit of adding trailing whitespace to code, which is a pet
+peeve of mine. It introduces irrelevant changes into diffs and is particularly
+glaring when commiting code with [GitX], which highlights it in red. In [TextMate]
+and now [Vico] I have bound the strip trailing whitespace in current document
+action to ⌃⌥⌘S (control-option-command-s). This makes it quick and easy.
+Xcode makes adding these types of actions a bit harder but I came up with a
+solution that uses the Behaviours functionality in Xcode 4. This is how I did
+it:
+
+[GitX]: http://gitx.frim.nl/
+[Vico]: http://www.vicoapp.com/
+[TextMate]: http://macromates.com/
+
+Create a shell script that invokes `sed` on each git tracked file that is
+modified. Since Xcode doesn't tell the script what the current file was and
+I didn't want to run sed over every file every time, processing tracked files
+with modifications was the best solution I could come up with. Note that the
+script also only prcocesses `.m` and `.h` files. I have my copy of the script
+in `~/Documents/strip.sh`, be sure to give it the execute permission.
+
+
+
+Next you need to add a behaviour to Xcode. Go to the Xcode preferences and
+click the Behaviours section, then click the + button. Name the behaviour and
+give it a keyboard shortcut. In the right pane check Run and choose the script
+you saved above. That's it. Now you can kill off that nasty whitespace with
+ease.
+
+
diff --git a/content/technical/2011/08/strip-trailing-whitespace-xcode-4.yaml b/content/technical/2011/08/strip-trailing-whitespace-xcode-4.yaml
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+---
+title: Strip Trailing Whitespace in Xcode 4
+extra: How to create a behaviour in Xcode 4 to strip trailing whitespace from all git tracked files with changes.
+kind: article
+section: technical
+created_at: 2011-08-27 19:36:00
+keywords:
+- xcode
+- strip
+- trailing
+- whitespace
+- text
+- editing
+- programming
+- apple
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