Virtually all the text editors let you do search-and-replace, some even support regular expressions, some let you extend their functionality with macros that are quite a job to write and to learn to (you have to study the editor API and often to write the code in a relatively esoteric language).

What I want is an editor that would let you just paste a Python function in a dialogue or a panel the way you paste search and replace samples and run it, passing the entire text edited or selected as a string (or a list of strings) argument to the function and replacing it with what it returns.

2 Answers 2


CudaText is free and cross-platform, it supports this.

  • Configure Python engine if you use Linux (see info about option "pylib" in CudaText Wiki)
  • call menu Plugins / Make Plugin; confirm to create new plugin
  • new plugin created, its __init__ python file is opened
  • change there method run like the following:
    def run(self):
        ALL_TEXT = False
        if ALL_TEXT:
            s = ed.get_text_all()
            s = '['+s+']' # any function here!!
            msg_status('all text replaced')
            x1, y1, x2, y2 = ed.get_carets()[0]
            if (y1, x1)>(y2, x2):
                x1,y1,x2,y2 = x2,y2,x1,y1
            if y2<0: return
            s = ed.get_text_substr(x1, y1, x2, y2)
            s = '['+s+']' # any function here!!
            ed.replace(x1, y1, x2, y2, s)
            msg_status('sel replaced')
  • change ALL_TEXT to use all text or only selection
  • call new plugin (restart CudaText) via Plugins / MySample
  • Should've probably downvoted this, because it doesn't really answer the question, but I'm upvoting it instead, because that editor seems cool. Took me about 10 minutes to write a useful plugin. And supports font ligatures. And not made with Electron, for a change. Are you the author of CudaText? You seem to be promoting it all over the place.
    – Headcrab
    Dec 5, 2019 at 2:43

You can run a Python script against the entire text by configuring the 'Build' menu selection in the Geany editor. See https://wiki.geany.org/howtos/configurebuildmenu

This will not allow you to run a script on just a text selection, however.

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