SublimeText3 Equal-sign Aligner Plugin

EqualizerCommand.py

# put in ~/.config/sublime-text-3/Packages/User/EqualizerCommand.py
#
# I use the following keybindings (Preferences > Key-Bindings > ('User' bindings - on the right side)):
#
#    {  
#        "keys": ["ctrl+shift+e"],  
#        "command": "equalizer"  
#    }
#
# Given a selection of text in the edit view, it will align all of the right-most
# equal signs with whichever of the right-most equal signs in the block of selected
# text is the farthest.
# Example:
# Say you selected the following text:
# ```
# $arr = array(
#     'key1' => 'val1',
#     'some_really_long_key_name' => 'val2',
#     'key3'      => 'val3',
# );
# ```
# And then pressed ctrl+shift+e, that block of code would turn into:
# ```
# $arr = array(
#     'key1'                      => 'val1',
#     'some_really_long_key_name' => 'val2',
#     'key3'                      => 'val3',
# );
# ```
# I find it useful for keeping blocks of variable initializers, etc. clean
import sublime, sublime_plugin

class EqualizerCommand(sublime_plugin.TextCommand):
    def run(self, edit):
        for region in self.view.sel():
            if not region.empty():

                # Get the selected text
                s = self.view.substr(region)

                lines = s.split('\n')

                equalized = ''

                # Get the right most equal sign in the lines
                max_equal_pos = 0
                for line in lines:
                    equal_pos = line.rfind('=')
                    if equal_pos > max_equal_pos:
                        max_equal_pos = equal_pos

                # loop through the lines and adjust each one
                for line in lines:

                    equal_pos = line.rfind('=')

                    if equal_pos >= max_equal_pos or equal_pos <= 0:
                        equalized += line + '\n'
                        continue

                    line_parts = line.rsplit('=', 1)
                    lhs = line_parts[0].rstrip()
                    rhs = line_parts[1]

                    equalized += lhs.ljust(max_equal_pos) + '=' + rhs + '\n'

                self.view.replace(edit, region, equalized)