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zeertzjqandChristoffer Aasted
54a21b3a4b
Problem: recursion error when setting ft=syntax
Solution: Skip the special syntax filetype
(Christoffer Aasted)
This:
vim -Nu NONE \
+'set filetype=syntax' \
+'syntax on'
yields
E127: Cannot redefine function <SNR>2_SynSet: It is in use
Setting filetype=syntax will try to reload synload.vim while SynSet() is
still executing which causes this error.
closes: vim/vim#21271
https://github.com/vim/vim/commit/ad289eece7b9e7aab1ef005b2c21c454010280ea
Co-authored-by: Christoffer Aasted <dezzadk@gmail.com>
79 lines
2.0 KiB
VimL
79 lines
2.0 KiB
VimL
" Vim syntax support file
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" Maintainer: The Vim Project <https://github.com/vim/vim>
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" Last Change: 2023 Aug 10
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" Former Maintainer: Bram Moolenaar <Bram@vim.org>
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" This file sets up for syntax highlighting.
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" It is loaded from "syntax.vim" and "manual.vim".
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" 1. Set the default highlight groups.
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" 2. Install Syntax autocommands for all the available syntax files.
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if !has("syntax")
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finish
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endif
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" let others know that syntax has been switched on
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let syntax_on = 1
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" Line continuation is used here, remove 'C' from 'cpoptions'
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let s:cpo_save = &cpo
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set cpo&vim
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" First remove all old syntax autocommands.
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au! Syntax
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au Syntax * call s:SynSet()
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fun! s:SynSet()
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" clear syntax for :set syntax=OFF and any syntax name that doesn't exist
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syn clear
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if exists("b:current_syntax")
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unlet b:current_syntax
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endif
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0verbose let s = expand("<amatch>")
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if s == "ON"
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" :set syntax=ON
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if &filetype == ""
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echohl ErrorMsg
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echo "filetype unknown"
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echohl None
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endif
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let s = &filetype
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elseif s == "OFF"
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let s = ""
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endif
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if s != ""
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" Load the syntax file(s). When there are several, separated by dots,
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" load each in sequence. Skip empty entries.
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for name in split(s, '\.')
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if !empty(name) && name !=# 'syntax'
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" XXX: "[.]" in the first pattern makes it a wildcard on Windows
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exe $'runtime! syntax/{name}[.]{{vim,lua}} syntax/{name}/*.{{vim,lua}}'
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endif
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endfor
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endif
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endfun
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" Handle adding doxygen to other languages (C, C++, C#, IDL, java, php, DataScript)
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au Syntax c,cpp,cs,idl,java,php,datascript
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\ if (exists('b:load_doxygen_syntax') && b:load_doxygen_syntax)
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\ || (exists('g:load_doxygen_syntax') && g:load_doxygen_syntax)
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\ | runtime! syntax/doxygen.vim
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\ | endif
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" Source the user-specified syntax highlighting file
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if exists("mysyntaxfile")
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let s:fname = expand(mysyntaxfile)
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if filereadable(s:fname)
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execute "source " . fnameescape(s:fname)
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endif
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endif
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" Restore 'cpoptions'
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let &cpo = s:cpo_save
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unlet s:cpo_save
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