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Runtime: Add nixInherit matcher in nix.vim syntax

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Perform the lookahead in `nixInheritAttributeScope`, then hand over to a
new region called `nixInheritAttributeSubExpr`, which sets the match
start to one char after the opening bracket to avoid a double-match.

Finally, only do a lookahead to `)` in `nixInheritAttributeSubExpr` (and
thus make sure the region is closed to not get a match of `nixParen`
here) and let `nixInheritAttributeScope` close the bracket.

Signed-off-by: Christian Brabandt <cb@256bit.org>
This commit is contained in:
James Fleming
2023-07-29 12:01:18 +02:00
committed by Christian Brabandt
parent 2d0988ef93
commit 72904d5fda
1 changed files with 5 additions and 3 deletions
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8
runtime/syntax/nix.vim
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@@ -1,11 +1,12 @@
" Vim syntax file
" Language: Nix
" Maintainer: James Fleming <james@electronic-quill.net>
" Maintainer: James Fleming <james@electronic-quill.net>
" (Github username: equill)
" Original Author: Daiderd Jordan <daiderd@gmail.com>
" Acknowledgement: Based on vim-nix maintained by Daiderd Jordan <daiderd@gmail.com>
" https://github.com/LnL7/vim-nix
" License: MIT
" Last Change: 2022 Dec 06
" Last Change: 2023 Aug 19
if exists("b:current_syntax")
finish
@@ -68,7 +69,8 @@ syn match nixAttribute "[a-zA-Z_][a-zA-Z0-9_'-]*\ze\%([^a-zA-Z0-9_'.-]\|$\)" con
syn region nixAttributeAssignment start="=" end="\ze;" contained contains=@nixExpr
syn region nixAttributeDefinition start=/\ze[a-zA-Z_"$]/ end=";" contained contains=nixComment,nixAttribute,nixInterpolation,nixSimpleString,nixAttributeDot,nixAttributeAssignment
syn region nixInheritAttributeScope start="(" end="\ze)" contained contains=@nixExpr
syn region nixInheritAttributeSubExpr start="("ms=e+1 end="\ze)" contained contains=nixAttributeDot,@nixExpr
syn region nixInheritAttributeScope start="\ze(" end=")" contained contains=nixInheritAttributeSubExpr
syn region nixAttributeDefinition matchgroup=nixInherit start="\<inherit\>" end=";" contained contains=nixComment,nixInheritAttributeScope,nixAttribute
syn region nixAttributeSet start="{" end="}" contains=nixComment,nixAttributeDefinition