Specify char set for double-click selection instead of word boundaries #19719
Description
Description of the new feature
Is there any way to switch wt to double-click-select chunk of text consisting of predefined character set, in a conventional way, same as vim (iskeyword) or putty (character classes) do for example? I know the character set I'm working with, and what should make my double-click selection, so I can enumerate it (ascii minus some chars). Otherwise I need to put almost all Unicode table to avoid sporadic UI symbols (like border elements, or file-type icons, etc) being selected as a part of the filename, keyword, variable, url, etc. Sporadically getting these symbols copied is distracting and getting annoying over time. Is this just because I don't understand what is the logic behind taking "word delimiters" approach and not providing all Unicode chars that's not a word as a default value, so I have to maintain my own list of known delimiters I hit by the time? Please explain.
Proposed technical implementation details
Use "Double-click selection delimiter chars" if it's not empty, and "Double-click selection character set" otherwise.