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Subject: bug#61303: 29.0.60; rust-ts-mode does not consistently fontify nested macro-invocations
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Hey there.

Thanks for another tree-sitter based mode to hack at :D

I think I've found an error/lacking in rust-ts-mode where we may have to 
move upstream to fix it.

Consider the following contrived (and yes, not very idiomatic) rust-code:

let result = format!("{}{}",
     "Well yes",
     format!("Or {} no?", "possibly"));

With rust-ts-mode first format! invocation will get highlighted as a 
macro-invocation, while the second will not.

Inspecting this using treesit-explore-mode, I get the following tree:

(let_declaration let pattern: (identifier) =
   value:
    (macro_invocation macro: (identifier) !
     (token_tree (
      (string_literal " ")
      (string_literal " ")
      (identifier)
      (token_tree (
       (string_literal " ")
       (string_literal " ")
       ))
      )))
   ;)

Notice the lack of a second/nested "macro_invocation"-node. Instead the 
second macro is just denoted as a "identifier".

To fix this, we'll probably need to upstream some bug-reports and PRs?

--
Jostein

In GNU Emacs 29.0.60 (build 7, x86_64-pc-linux-gnu, GTK+ Version
  3.24.36, cairo version 1.17.6) of 2023-02-05 built on thinkpad-t14s
Repository revision: 088425538f2122d88a4f4e132dbb2f1139648531
Repository branch: emacs-29
Windowing system distributor 'The X.Org Foundation', version 11.0.12201007
System Description: Arch Linux

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From: help-debbugs@HIDDEN (GNU bug Tracking System)
To: jostein@HIDDEN
Subject: bug#61303: Acknowledgement (29.0.60; rust-ts-mode does not
 consistently fontify nested macro-invocations)
Message-ID: <handler.61303.B.1675631758626.ack <at> debbugs.gnu.org>
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Subject: bug#61303: 29.0.60; rust-ts-mode does not consistently fontify nested macro-invocations
Resent-From: Theodor Thornhill <theo@HIDDEN>
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Cc: dev@HIDDEN, jostein@HIDDEN, 61303 <at> debbugs.gnu.org
From: Theodor Thornhill <theo@HIDDEN>
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 ("Jostein =?UTF-8?Q?Kj=C3=B8nigsen?="'s message of "Sun, 5 Feb 2023
 22:08:32 +0100")
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Date: Sun, 05 Feb 2023 23:22:18 +0100
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Jostein Kj=C3=B8nigsen <jostein@HIDDEN> writes:

> Hey there.
>

Hi!

> Thanks for another tree-sitter based mode to hack at :D
>
> I think I've found an error/lacking in rust-ts-mode where we may have to =
move
> upstream to fix it.
>
> Consider the following contrived (and yes, not very idiomatic) rust-code:
>
> let result =3D format!("{}{}",
> =C2=A0=C2=A0=C2=A0 "Well yes",
> =C2=A0=C2=A0=C2=A0 format!("Or {} no?", "possibly"));
>
> With rust-ts-mode first format! invocation will get highlighted as a
> macro-invocation, while the second will not.
>
> Inspecting this using treesit-explore-mode, I get the following tree:
>
> (let_declaration let pattern: (identifier) =3D
> =C2=A0 value:
> =C2=A0=C2=A0 (macro_invocation macro: (identifier) !
> =C2=A0=C2=A0=C2=A0 (token_tree (
> =C2=A0=C2=A0=C2=A0=C2=A0 (string_literal " ")
> =C2=A0=C2=A0=C2=A0=C2=A0 (string_literal " ")
> =C2=A0=C2=A0=C2=A0=C2=A0 (identifier)
> =C2=A0=C2=A0=C2=A0=C2=A0 (token_tree (
> =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 (string_literal " ")
> =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 (string_literal " ")
> =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 ))
> =C2=A0=C2=A0=C2=A0=C2=A0 )))
> =C2=A0 ;)
>
> Notice the lack of a second/nested "macro_invocation"-node. Instead the s=
econd
> macro is just denoted as a "identifier".
>
> To fix this, we'll probably need to upstream some bug-reports and PRs?

Sounds like it!  Just in case - the code compiles, right?

Theo

Message sent to bug-gnu-emacs@HIDDEN:

Subject: bug#61303: 29.0.60; rust-ts-mode does not consistently fontify nested macro-invocations
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Date: Sun, 05 Feb 2023 23:26:32 +0100
From: Jostein =?UTF-8?Q?Kj=C3=B8nigsen?= <jostein@HIDDEN>
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On Sun, Feb 5, 2023, at 23:22, Theodor Thornhill wrote:
> Jostein Kj=C3=B8nigsen <jostein@HIDDEN> writes:
>=20
> > Hey there.
> >
>=20
> Hi!
>=20
> > Thanks for another tree-sitter based mode to hack at :D
> >
> > I think I've found an error/lacking in rust-ts-mode where we may hav=
e to move
> > upstream to fix it.
> >
> > Consider the following contrived (and yes, not very idiomatic) rust-=
code:
> >
> > let result =3D format!("{}{}",
> >     "Well yes",
> >     format!("Or {} no?", "possibly"));
> >
> > With rust-ts-mode first format! invocation will get highlighted as a
> > macro-invocation, while the second will not.
> >
> > Inspecting this using treesit-explore-mode, I get the following tree:
> >
> > (let_declaration let pattern: (identifier) =3D
> >   value:
> >    (macro_invocation macro: (identifier) !
> >     (token_tree (
> >      (string_literal " ")
> >      (string_literal " ")
> >      (identifier)
> >      (token_tree (
> >       (string_literal " ")
> >       (string_literal " ")
> >       ))
> >      )))
> >   ;)
> >
> > Notice the lack of a second/nested "macro_invocation"-node. Instead =
the second
> > macro is just denoted as a "identifier".
> >
> > To fix this, we'll probably need to upstream some bug-reports and PR=
s?
>=20
> Sounds like it!  Just in case - the code compiles, right?
>=20
> Theo
>=20

Yes. This is compilable, runnable rust-code.=20

=E2=80=94
Jostein
--a3f919d0a4d04d63862e146b043d2c52
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<!DOCTYPE html><html><head><title></title><style type=3D"text/css">p.Mso=
Normal,p.MsoNoSpacing{margin:0}</style></head><body><div><br></div><div>=
On Sun, Feb 5, 2023, at 23:22, Theodor Thornhill wrote:<br></div><blockq=
uote type=3D"cite" id=3D"qt" style=3D""><div>Jostein Kj=C3=B8nigsen &lt;=
<a href=3D"mailto:jostein@HIDDEN">jostein@HIDDEN=
.net</a>&gt; writes:<br></div><div><br></div><div>&gt; Hey there.<br></d=
iv><div>&gt;<br></div><div><br></div><div>Hi!<br></div><div><br></div><d=
iv>&gt; Thanks for another tree-sitter based mode to hack at :D<br></div=
><div>&gt;<br></div><div>&gt; I think I've found an error/lacking in rus=
t-ts-mode where we may have to move<br></div><div>&gt; upstream to fix i=
t.<br></div><div>&gt;<br></div><div>&gt; Consider the following contrive=
d (and yes, not very idiomatic) rust-code:<br></div><div>&gt;<br></div><=
div>&gt; let result =3D format!("{}{}",<br></div><div>&gt; &nbsp;&nbsp;&=
nbsp; "Well yes",<br></div><div>&gt; &nbsp;&nbsp;&nbsp; format!("Or {} n=
o?", "possibly"));<br></div><div>&gt;<br></div><div>&gt; With rust-ts-mo=
de first format! invocation will get highlighted as a<br></div><div>&gt;=
 macro-invocation, while the second will not.<br></div><div>&gt;<br></di=
v><div>&gt; Inspecting this using treesit-explore-mode, I get the follow=
ing tree:<br></div><div>&gt;<br></div><div>&gt; (let_declaration let pat=
tern: (identifier) =3D<br></div><div>&gt; &nbsp; value:<br></div><div>&g=
t; &nbsp;&nbsp; (macro_invocation macro: (identifier) !<br></div><div>&g=
t; &nbsp;&nbsp;&nbsp; (token_tree (<br></div><div>&gt; &nbsp;&nbsp;&nbsp=
;&nbsp; (string_literal " ")<br></div><div>&gt; &nbsp;&nbsp;&nbsp;&nbsp;=
 (string_literal " ")<br></div><div>&gt; &nbsp;&nbsp;&nbsp;&nbsp; (ident=
ifier)<br></div><div>&gt; &nbsp;&nbsp;&nbsp;&nbsp; (token_tree (<br></di=
v><div>&gt; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (string_literal " ")<br></div=
><div>&gt; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (string_literal " ")<br></div>=
<div>&gt; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ))<br></div><div>&gt; &nbsp;&nb=
sp;&nbsp;&nbsp; )))<br></div><div>&gt; &nbsp; ;)<br></div><div>&gt;<br><=
/div><div>&gt; Notice the lack of a second/nested "macro_invocation"-nod=
e. Instead the second<br></div><div>&gt; macro is just denoted as a "ide=
ntifier".<br></div><div>&gt;<br></div><div>&gt; To fix this, we'll proba=
bly need to upstream some bug-reports and PRs?<br></div><div><br></div><=
div>Sounds like it!&nbsp; Just in case - the code compiles, right?<br></=
div><div><br></div><div>Theo<br></div><div><br></div></blockquote><div><=
br></div><div>Yes. This is compilable, runnable rust-code.&nbsp;<br></di=
v><div><br></div><div>=E2=80=94<br></div><div>Jostein</div></body></html=
>
--a3f919d0a4d04d63862e146b043d2c52--

Last modified: Sun, 5 Feb 2023 22:30:02 UTC

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Copyright (C) 1999 Darren O. Benham, 1997 nCipher Corporation Ltd, 1994-97 Ian Jackson.