Support for custom commands in structure view

[tmczar]

For example:

I have a command \myInput{file}. It does some small random stuff, but most importantly, it does \input{file}.

It would be great, if I could instruct (via settings) TeXiFy to treat \myInput just like \input for purposes of structure/navigation and all that.

The same applies to just about everything. One may have some macro that starts new section, but with some custom decorators - it would be great to be able to use those settings for this "decorated setting" to show in structure view.

My idea of implementing it, is via list of pairs (customCommand, standardCommand).

Setup like (A, B) would make TeXiFy treat A just like B, for purposes of structuring.

Note: this idea is not really a new one. My previous LaTeX editor of choice - Kile - has something similar (albeit list of standard commands one can map to is hard-coded).

[tmczar]

Additional example is \newcommandx - very nice macro to use instead of \newcommand, that is sadly not supported by TeXiFy - this feature would allow to deal with such problem manually.

[tmczar]

It would also allow for (relatively) easy solution of problems like that:

#3488

Instead of trying to support all possible exotic setups of every single user and multitude of packages providing new helper commands, this would allow users themselves to solve it themselves.

[tmczar]

Having read through https://github.com/Hannah-Sten/TeXiFy-IDEA/blob/master/src/nl/hannahsten/texifyidea/util/magic/CommandMagic.kt, I think it would be best to have some ability to add custom entries to it. (maybe even via some per-project user file?)

[PHPirates]

Thanks for the suggestion. We do have something to detect redefinitions for \label but not yet for \input (https://hannah-sten.github.io/TeXiFy-IDEA/editing-a-latex-file.html#support-for-user-defined-commands)
The main reason is that I am worried about performance.

\newcommandx should also be added to our magic list.

I do agree that it would be nice to expose the magic lists to users because not everything is possible to automatically detect. It would be similar to our current Conventions settings (https://hannah-sten.github.io/TeXiFy-IDEA/texify-settings.html#conventions)

It would not help for #3488 because that issue is at parser level, so we can't use user settings there.