bug#59660: 29.0.50; typescript-ts-mode consistently fontifies method-names incorrectly

[Yuan Fu <casouri@gmail.com>]

> On Nov 28, 2022, at 7:04 AM, Jostein Kjønigsen <jostein@secure.kjonigsen.net> wrote:
> 
> From: "Jostein Kjønigsen" <jostein@ThinkPad-T14s.mail-host-address-is-not-set>
> To: bug-gnu-emacs@gnu.org
> Subject: 29.0.50; typescript-ts-mode consistently fontifies method-names incorrectly
> --text follows this line--
> 
> --
> When I:
> 
> 1. create a typescript file (sample.ts)
> 2. create class and add some methods to it.
> 
> I observe that:
> 
> - method names are consistently fontified as font-lock-property-face.
> 
> I expected that:
> 
> - method names to be consistently fontified as font-luck-function-name-face.
> 
> This seems to be because of the "property_identifier" is used for
> functions in the treesitter-grammar, and this property is used
> indiscriminately to apply font-lock-property-face at the bottom of the
> major-mode grammar.
> 
> This "shadows" the former rules which correctly apply font-lock-function-name-face.
> 
> The best would obviously have a way to identify properties more accurately, to precent
> shadowing from taking place. Unfortunately I cannot see a realiable way to do that
> based on the current parse-tree.
> 
> Seeing as properties in Typescript are fairly rare while methods are very common,
> it seems appropriate to me to remove the property-specific fontification rules
> to restore the method-fontification rules.
> 
> I got a patch for this ready, if people are willing to accept it.

Maybe you can remove the :override flag for the property_identifier rule, so it doesn’t shadow the function rule? Would that work better?

Yuan