Customizing editor (tab's) label/title text, and/or its format?

[peter-lyons-kehl]

In short: Could a VS Code extension either

• add a custom format to options in workbench.editor.labelFormat, and/or
• modify format (the text, and/or bold/large formatting) of the source code editor tab titles/labels?

(If it makes it any easier, it's needed for Rust files only - with .rs extension, or - even better - only to files called mod.rs. Otherwise applying this to any source file tabs is OK, too.)

If so, where under https://code.visualstudio.com/api, or what parts of the API's/what approach would be the smoothest and simplest, please?

(Insiders/Unstable/GIT-based-only API is fine, if it enables this.)

(I'm completely new to VS Code extensions API.
Longer: Rust mainstream has all (sub)modules in files called mod.rs. The module name/path is based on the directory path. Switching between even a few modules in VS Code is then a pain ( regardless of workbench.editor.labelFormat). I've searched at Market Place, and at its "tab" and "tabs" tag, but nothing relevant.
I believe this would make Rust community grateful.)

Update: Thanks to https://stackoverflow.com/questions/62569941/show-only-parent-folder-names, I'll experiment with Monkey Patch and will try to resurrect https://github.com/skoshy/nice-index-vscode. (There is also microsoft/vscode#41909, but seems ignored.)

[isidorn]

This is currently not possible. And this request seems to be covered with microsoft/vscode#41909 as you already found out.

[matthew-dean]

The current answer is not correct. You can do this! See: https://code.visualstudio.com/docs/getstarted/userinterface#_customize-tab-labels