Update ctags to p6.1.20240519.0

[techee]

This PR contains some ctags updates which were made upstream as discussed in #3859.

Apart from that I noticed that the update-ctags.py script didn't copy the updated libreadtags library so I modified it to do so and as a result this PR also contains updated readtags.c/h which was missed in the previous PR.

[techee]

Just thinking, in #3859 I mapped matlab variables to tm_tag_variable_t so they are displayed in the sidebar but maybe the result is a little too verbose. Especially since it generates a tag for every variable assignment - I just tried it with some random code from github and it displays lots of identical variables in the sidebar, just every time the variable gets assigned.

So shouldn't we rather map it to tm_tag_undef_t?

[elextr]

Python does this too, every assignment is a new declaration and shows in the sidebar, on the other hand Julia (where assignment is also declaration) has chosen not to show any assignments in the sidebar, YMMV.

[techee]

Python does this too, every assignment is a new declaration and shows in the sidebar

Yes, but this happens only for the global variables, not variables inside functions. Since the matlab parser is just a dumb regex parser, it doesn't know whether it's inside a function so it shows all assignments and the result is a little too noisy.

[elextr]

it doesn't know whether it's inside a function so it shows all assignments and the result is a little too noisy.

Yeah, if they are not scoped then its not very useful.

[b4n]

Wanna laugh? universal-ctags/ctags#4008 😄

[b4n]

Just thinking, in #3859 I mapped matlab variables to tm_tag_variable_t so they are displayed in the sidebar but maybe the result is a little too verbose. Especially since it generates a tag for every variable assignment - I just tried it with some random code from github and it displays lots of identical variables in the sidebar, just every time the variable gets assigned.

So shouldn't we rather map it to tm_tag_undef_t?

Hum yeah if it's gonna tag every variable assignment in the file regardless of scope, it's probably better to disable indeed, otherwise the more useful tags are likely gonna be hard to find. Maybe tm_local_var_t if we want, to still have goto stuff? Not sure if it's really useful though.

[techee]

So shouldn't we rather map it to tm_tag_undef_t?

Hum yeah if it's gonna tag every variable assignment in the file regardless of scope, it's probably better to disable indeed, otherwise the more useful tags are likely gonna be hard to find. Maybe tm_local_var_t if we want, to still have goto stuff? Not sure if it's really useful though.

I just mapped it to tm_tag_undef_t. Even though mapping to tm_local_var_t would probably work, control-clicking a variable that is assigned many times creates a huge popup with all the assignments which is kind of ugly.

[techee]

Wanna laugh? universal-ctags/ctags#4008 😄

No problem. I've just included the updated jscript parser (without updating the rest). We can update the parsers individually if there are some fixes that should be present in the release.