Sublime Text 3 plugin to replace the default transpose command with something that behaves more like bash/emacs. Drop in to ~/.config/sublime-text-3/Packages/User to use.

better_transpose.py

import sublime, sublime_plugin


class Transpose(sublime_plugin.TextCommand):
    """Improve Sublime's transpose command.

    Make Sublime's transpose command behave more like bash/emacs.

    For each point:

    * if the point is the end of a selection, do nothing
    * if the point is at the start of the line, do nothing
    * if the point is at the end of the line, swap the last two
      characters of the line
    * otherwise, swap the characters before and after the point

    TODO:

        * M-t to transpose words
        * handle selections?

    """

    def point_at_line_start(self, region):
        return region.empty() and \
            (self.view.classify(region.b) & sublime.CLASS_LINE_START)

    def point_at_line_end(self, region):
        return region.empty() and \
            (self.view.classify(region.b) & sublime.CLASS_LINE_END)

    def update_regions(self, region_updates):
        selection = self.view.sel()
        for old, new in region_updates:
            selection.subtract(old)
            selection.add(new)

    def run(self, edit):
        selection = self.view.sel()
        region_updates = []

        for region in selection:
            if not region.empty() or self.point_at_line_start(region):
                continue
            elif self.point_at_line_end(region):
                mutate = sublime.Region(region.b - 2, region.b)
            else:
                mutate = sublime.Region(region.b - 1, region.b + 1)
                region_updates.append(
                    (region, sublime.Region(mutate.b, mutate.b))
                )

            self.view.replace(edit, mutate, self.view.substr(mutate)[::-1])

        self.update_regions(region_updates)

Hi! I want transpose features like Emacs in Sublime. I follow you how to drop file into Packages/User. But it doesn't work. Still typing Ctrl+t acts like default (between 2 character). Can you make it work on me?