Async functions support

[k-bx]

Unless I'm not using it right, rusty-tags for me does not create tags for async functions, which make up most of the functions I write :) So I thought why not at least create an issue on this.

Invoking via rusty-tags -s ./proj emacs

[dan-t]

If you're using 'exuberant-ctags', then you can try extending the regex in the function 'ctags_command' in the file 'types.rs'

In the case of 'universal-ctags', the parsing of the tool itself has to be extended.

[k-bx]

I've added the change like this:

                   .arg("--regex-Rust=/^[ \\t]*(#\\[[^\\]]\\][ \\t]*)*(pub[ \\t]+)?(extern[ \\t]+)?(\"[^\"]+\"[ \\t]+)?(unsafe[ \\t]+)?(async[ \\t]+)?fn[ \\t]+([a-zA-Z0-9_]+)/\\6/f,functions,function definitions/")                                                   

and can see relevant blocks in TAGS file now. For example:

/home/kb/.../model.rs,88
pub async fn put_user_log_rec(async
7,258
pub async fn get_user_log_recs(async
30,865

Couldn't figure out what exactly is wrong, unfortunately. Help appreciated!

[k-bx]

All right, I think it had something to do with my etags-select, switching to helm helped.