#trailing whitespace

Sublime text editor already implement this future out of the box, but it's disabled by default and need to set a parameter on user settings and trim all trailing whitespace on saving a file.

So, click on Preferences menu => Settings - User and copy/paste this code:

{ // ......, "trim_trailing_white_space_on_save": true }

Trailing whitespace can be very helpful if you are using Git patch, as Git generate errors when patch contains trailing whitespace.

One line command to clean up the trailing whitespace for a given project:

find . -name "*.rb" -type f -print0 | xargs -0 sed -i '' "s/[[:space:]]*$//"