Cursor moves become laggy when navigating inside massive of comments

[ukyouz]

Let's say we have a note.h header file with massive comment like below:

/*# --------------- #*/
/*# date:...        #*/
/*# ...             #*/
/*# (x30000)        #*/

Navigating inside this kind of files is extremely slow on my computer, it takes about 9 sec for each time trying to get_context(). Here is the profile log with profile func * command.

FUNCTION  context#popup#update_context()
    Defined: ~\AppData\Local\nvim-data\lazy\context.vim\autoload\context\popup.vim:1
Called 19 times
Total time:   9.457598
 Self time:   0.000512

count  total (s)   self (s)
   19   9.456698   0.000127     let [lines, base_line] = context#popup#get_context()
   19   0.000110   0.000082     call context#util#echof('> context#popup#update_context', len(lines))
                            
                                " NOTE: we remember context lines and baseline indent per window so we can
                                " redraw them in #layout when the window layout changes
   19              0.000044     let w:context.lines = lines
   19   0.000116   0.000075     let [w:context.level, w:context.indent] = g:context.Border_indent(base_line)
                            
   19   0.000121   0.000074     call s:show_cursor()
   19   0.000449   0.000050     call s:show()

But, since they are just comments, no actually "context" there can be found, so I think in some case we can just abort with some abort mechanism.

I knows there are settings like g:context_filetype_blacklist and g:context_buftype_blacklist, but in this case, the filetype is cpp and buftype is empty, so I can not use these settings to avoid this issue.

Finally, I have tried added the following lines inside context#popup#get_context(), and it kinds of work, but maybe there is better way doing this, or let user decide the aborting threshold.

        let text = getline(line_number) " empty for invalid lines
        if context#line#should_skip(text)
            let skipped += 1
            " call context#util#echof('skip', line_number)
+           if skipped > 1000
+               return [[], 0]
+           endif
            continue
        endif

I really like this plugin and hope this issue can be fixed.
Thanks :)