Extremely slow indentation inside tables

[cigumo]

I've just updated to the latest version in mepla (20210809) and it's extremely slow indenting tables.

Here's an example:

 100 = {a='b', c=2},
 101 = {a='b', c=2},
 102 = {a='b', c=2},
 ... (500 more lines) 
}

It takes 40 seconds to indent it!

Here's a profiler report:

- command-execute 20021 89%
 - call-interactively 20021 89%
 - funcall-interactively 19931 88%
 - indent-region 19855 88%
 - indent-region-line-by-line 19854 88%
 - indent-according-to-mode 19802 88%
 - lua-indent-line 19802 88%
 - lua-calculate-indentation 19765 87%
 - lua-calculate-indentation-block-modifier 19677 87%
 - lua-calculate-indentation-info 19677 87%
 - lua-is-continuing-statement-p 19624 87%
 - lua-is-continuing-statement-p-1 19605 87%
 - lua--backward-up-list-noerror 19533 86%
 - lua-backward-up-list 19512 86%
 - lua-find-matching-token-word 9865 43%
 + lua-find-regexp 9584 42%
 lua-get-block-token-info 49 0%
 - lua-find-regexp 9419 41%
 - lua-comment-or-string-p 9101 40%
 - syntax-ppss 8911 39%
 #<compiled 0x1ff9b7316815> 6 0%
 + lua-comment-start-pos 34 0%
 match-string-no-properties 48 0%
 lua-get-block-token-info 34 0%
 + lua-last-token-continues-p 29 0%
 + lua-forward-line-skip-blanks 28 0%
 + lua--continuation-breaking-line-p 9 0%
 + lua-first-token-continues-p 6 0%
 + lua--goto-line-beginning-rightmost-closer 16 0%
 + lua-calculate-indentation-info-1 46 0%
 back-to-indentation 3 0%
 + lua-calculate-indentation-override 60 0%
 + lua-forward-line-skip-blanks 28 0%
 + lua-comment-or-string-p 36 0%
 back-to-indentation 1 0%
 progress-reporter-do-update 51 0%
 + execute-extended-command 76 0%

Thanks!

[cigumo]

Tested in emacs 27.1 and 27.2 on a Mac.

[immerrr]

Hi,

I'll try to have a look at this over the weekend. Thank you for the report!

[cigumo]

Thanks!!! It's really making my life miserable and I don't have time to fix it myself for the rest of the month. :)