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-rw-r--r--runtime/syntax/syntax.vim44
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+" Vim syntax support file
+" Maintainer: Bram Moolenaar <Bram@vim.org>
+" Last Change: 2022 Apr 12
+
+" This file is used for ":syntax on".
+" It installs the autocommands and starts highlighting for all buffers.
+
+if !has("syntax")
+ finish
+endif
+
+" If Syntax highlighting appears to be on already, turn it off first, so that
+" any leftovers are cleared.
+if exists("syntax_on") || exists("syntax_manual")
+ so <sfile>:p:h/nosyntax.vim
+endif
+
+" Load the Syntax autocommands and set the default methods for highlighting.
+runtime syntax/synload.vim
+
+" Load the FileType autocommands if not done yet.
+if exists("did_load_filetypes")
+ let s:did_ft = 1
+else
+ filetype on
+ let s:did_ft = 0
+endif
+
+" Set up the connection between FileType and Syntax autocommands.
+" This makes the syntax automatically set when the file type is detected.
+" Avoid an error when 'verbose' is set and <amatch> expansion fails.
+augroup syntaxset
+ au! FileType * 0verbose exe "set syntax=" . expand("<amatch>")
+augroup END
+
+
+" Execute the syntax autocommands for the each buffer.
+" If the filetype wasn't detected yet, do that now.
+" Always do the syntaxset autocommands, for buffers where the 'filetype'
+" already was set manually (e.g., help buffers).
+doautoall syntaxset FileType
+if !s:did_ft
+ doautoall filetypedetect BufRead
+endif