Trim trailing spaces in Xcode
Starting from Xcode 4.4 whitespaces will be trimmed automatically by default, unless the line is all whitespace. You can also activate Including whitespace-only lines to fix this, which is not active by default.
Go to Xcode > Preferences > Text Editing > While editing
I'm using the Google Toolbox For Mac Xcode Plugin, it adds a "Correct whitespace on save" parameter that trim trailing whitespace on save. I missed that a lot from emacs.
You can create a script and bind it to a keyboard shortcut:
- Select Scripts Menu > Edit User Scripts...
- Press the + button and select New Shell Script
- Give it a name like "Strip Trailing Spaces", and give it a shortcut like ⌃⇧R.
- Set Input to "Selection" and Output to "Replace Selection"
Then enter the following script:
#!/usr/bin/perlwhile (<>) { s/\s+$//; print "$_\n";}