Custom word separators break GDScript Symbol lookup via context menu

[HolonProduction]

Tested versions

v4.3.beta3.official [82cedc8]

System information

Godot v4.3.beta3 - Fedora Linux 40 (Workstation Edition) - Wayland - Vulkan (Forward+)

Issue description

When configuring a custom word separator (as implemented in #92514) it is not possible anymore to lookup a symbol containing this separator (only applies to code lookup via context menu, since for some reason calculating words for lookup isn't consistent, maybe this should be the job of the ScriptLanguage and not the CodeEdit 🤔).
You can even end up on in wrong places if the part after the separator matches another lookup target.

var my_print
my_print # looking up over print will bring you to the print docs if _ is configured as separator

Steps to reproduce

• configure a custom separator in the editor settings
• name a variable containing this separator
• spell it out
• try to look it up

Minimal reproduction project (MRP)

Only contains a script where you can observe it, the editor settings need to be tweeked manually.

lookup.zip

[vgezer]

I can confirm this. Ctrl + click points to the correct definition, but right clicking on "print" brings the print documentation. Any ideas how can I fix this?

[HolonProduction]

The not easy, but probably better from a design standpoint, solution:
Rework the whole system, so that word separation for symbol lookup is handled by the ScriptLanguage (or let the script language provide a set of separators).

The quick and dirty fix:

• the context menu entry uses get_word_under_caret
• the ctrl + click combination uses TextEdit::get_word_at_pos
• one works the other not, so just change the not working one to the working one

TextEdit::get_word_at_pos not respecting custom word separators might be a bug on its own though. Not sure 🤷

Or maybe the custom separator usage could be turned of while using the context menu, but that sounds a bit hacky to me.