Ubuntu – Recommend regular expression plugin for gedit

You should not need to escape your regex characters. Your first example should be:

[0-9]{2,3}

Your second example should be:

\bNote\b

For the third situation, you'll need to match things before and after, then use back-references:

(.*)([0-9]{3}.*)

with the replacement being:

\1p\2

For more details, see pydoc re that will tell you about Python regular expression syntax, or the online documentation.

I had the same issue with Ubuntu 12.04 and Gedit 3.4.1, but with a different plug-in.

This is how I resolved it: Find the file [plugin-name]*.plugin in gedit's plugin directory and edit the line Loader=python3 to Loader=python

My gedit plugin-dir was under /usr/lib/gedit/plugins/ if it helps.