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Subject: Re: bug#75164: treesit-font-lock-fontify-region is easy to lost color
on parse error. suggest to remain fontify on parse error.
From: Yuan Fu <casouri@HIDDEN>
In-Reply-To: <m21pxqggj9.fsf@HIDDEN>
Date: Tue, 31 Dec 2024 13:02:52 -0800
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<m21pxqggj9.fsf@HIDDEN>
To: Charalampos Mitrodimas <charmitro@HIDDEN>
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> On Dec 29, 2024, at 4:28=E2=80=AFPM, Charalampos Mitrodimas =
<charmitro@HIDDEN> wrote:
>=20
> Hi,
>=20
> Eval Exec <execvy@HIDDEN> writes:
>=20
>> Hello.
>> When I enable rust-ts-mode on a rust file, I found treesitter is easy
>> to make emacs buffer to lost color.
>> For example, on the following rust code:
>> ```rust
>>=20
>> struct Dog {
>> name: String,
>> age: u8,
>> }
>>=20
>>=20
>> struct ManyStruct {
>> a: u8,
>> }
>>=20
>> fn many_code(){
>> fn fib(n: u32) -> u32 {
>> if n =3D=3D 0 {
>> return 0;
>> }
>> if n =3D=3D 1 {
>> return 1;
>> }
>> fib(n - 1) + fib(n - 2)
>> }
>> }
>>=20
>> fn main() {
>> // change below `//` to `/` to see the difference
>> // {
>> }
>> ```
>>=20
>> the rust code is right, and the emacs buffer color is right on every
>> struct/functions.
>> But, if I change `// {` to `/ {`, then the rust code is wrong, this
>> buffer will lost all colors.
>=20
> Thanks for reporting this.
>=20
> I attempted to reproduce this, using your example, when I change `// =
{`
> to `/{` only "main" from `fn main()` loses color. The rest of the =
syntax
> highlighting remains intact in my setup.
It=E2=80=99s indeed strange to see the whole buffer lost fontification. =
I don=E2=80=99t see it either.
Yuan=
bug-gnu-emacs@HIDDEN:bug#75164; Package emacs.
Full text available.
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From: Charalampos Mitrodimas <charmitro@HIDDEN>
To: Eval Exec <execvy@HIDDEN>
Subject: Re: bug#75164: treesit-font-lock-fontify-region is easy to lost
color on parse error. suggest to remain fontify on parse error.
In-Reply-To: <CAKfPJDq5i-WaoZ+1-=F1VGxm_2YWTqN45H+7f0Y8+BRFMnM7DQ@HIDDEN>
(Eval Exec's message of "Sun, 29 Dec 2024 00:25:24 +0800")
References: <CAKfPJDq5i-WaoZ+1-=F1VGxm_2YWTqN45H+7f0Y8+BRFMnM7DQ@HIDDEN>
Date: Mon, 30 Dec 2024 00:28:58 +0000
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Hi,
Eval Exec <execvy@HIDDEN> writes:
> Hello.
> When I enable rust-ts-mode on a rust file, I found treesitter is easy
> to make emacs buffer to lost color.
> For example, on the following rust code:
> ```rust
>
> struct Dog {
> name: String,
> age: u8,
> }
>
>
> struct ManyStruct {
> a: u8,
> }
>
> fn many_code(){
> fn fib(n: u32) -> u32 {
> if n == 0 {
> return 0;
> }
> if n == 1 {
> return 1;
> }
> fib(n - 1) + fib(n - 2)
> }
> }
>
> fn main() {
> // change below `//` to `/` to see the difference
> // {
> }
> ```
>
> the rust code is right, and the emacs buffer color is right on every
> struct/functions.
> But, if I change `// {` to `/ {`, then the rust code is wrong, this
> buffer will lost all colors.
Thanks for reporting this.
I attempted to reproduce this, using your example, when I change `// {`
to `/{` only "main" from `fn main()` loses color. The rest of the syntax
highlighting remains intact in my setup.
C. Mitrodimas
> You can see the change on bellow images:
>
> https://imgur.com/a/4Tnv0GJ
>
> I suggest emacs can remain colors even if the code is wrong.
>
> My emacs version info: GNU Emacs 31.0.50
bug-gnu-emacs@HIDDEN:bug#75164; Package emacs.
Full text available.
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From: Eval Exec <execvy@HIDDEN>
Date: Sun, 29 Dec 2024 00:25:24 +0800
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Subject: treesit-font-lock-fontify-region is easy to lost color on parse
error. suggest to remain fontify on parse error.
To: bug-gnu-emacs@HIDDEN
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Hello.
When I enable rust-ts-mode on a rust file, I found treesitter is easy
to make emacs buffer to lost color.
For example, on the following rust code:
```rust
struct Dog {
name: String,
age: u8,
}
struct ManyStruct {
a: u8,
}
fn many_code(){
fn fib(n: u32) -> u32 {
if n == 0 {
return 0;
}
if n == 1 {
return 1;
}
fib(n - 1) + fib(n - 2)
}
}
fn main() {
// change below `//` to `/` to see the difference
// {
}
```
the rust code is right, and the emacs buffer color is right on every
struct/functions.
But, if I change `// {` to `/ {`, then the rust code is wrong, this
buffer will lost all colors.
You can see the change on bellow images:
https://imgur.com/a/4Tnv0GJ
I suggest emacs can remain colors even if the code is wrong.
My emacs version info: GNU Emacs 31.0.50
Eval Exec <execvy@HIDDEN>:bug-gnu-emacs@HIDDEN.
Full text available.bug-gnu-emacs@HIDDEN:bug#75164; Package emacs.
Full text available.
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