patch 9.1.1307: make syntax does not reliably detect different flavors
Problem: GNU extensions, such as `ifeq` and `wildcard` function, are
highlighted in BSDmakefile
Solution: detect BSD, GNU, or Microsoft implementation according to
filename, user-defined global variables, or file contents
closes: #17089
Co-authored-by: Roland Hieber <rohieb@users.noreply.github.com>
Signed-off-by: Eisuke Kawashima <e-kwsm@users.noreply.github.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/syntax/make.vim b/runtime/syntax/make.vim
index d3ddf78..a6d8ad4 100644
--- a/runtime/syntax/make.vim
+++ b/runtime/syntax/make.vim
@@ -4,6 +4,7 @@
" Previous Maintainer: Claudio Fleiner <claudio@fleiner.com>
" URL: https://github.com/vim/vim/blob/master/runtime/syntax/make.vim
" Last Change: 2022 Nov 06
+" 2025 Apr 15 by Vim project: rework Make flavor detection (#17089)
" quit when a syntax file was already loaded
if exists("b:current_syntax")
@@ -13,6 +14,9 @@
let s:cpo_save = &cpo
set cpo&vim
+" enable GNU extension when b:make_flavor is not set—detection failed or Makefile is POSIX-compliant
+let s:make_flavor = 'gnu'
+
" some special characters
syn match makeSpecial "^\s*[@+-]\+"
syn match makeNextLine "\\\n\s*"
@@ -21,14 +25,16 @@
syn region makeDefine start="^\s*define\s" end="^\s*endef\s*\(#.*\)\?$"
\ contains=makeStatement,makeIdent,makePreCondit,makeDefine
-" Microsoft Makefile specials
-syn case ignore
-syn match makeInclude "^!\s*include\s.*$"
-syn match makePreCondit "^!\s*\(cmdswitches\|error\|message\|include\|if\|ifdef\|ifndef\|else\|else\s*if\|else\s*ifdef\|else\s*ifndef\|endif\|undef\)\>"
-syn case match
+if get(b:, 'make_flavor', s:make_flavor) == 'microsoft'
+ " Microsoft Makefile specials
+ syn case ignore
+ syn match makeInclude "^!\s*include\s.*$"
+ syn match makePreCondit "^!\s*\(cmdswitches\|error\|message\|include\|if\|ifdef\|ifndef\|else\|else\s*if\|else\s*ifdef\|else\s*ifndef\|endif\|undef\)\>"
+ syn case match
+endif
" identifiers
-if exists("b:make_microsoft") || exists("make_microsoft")
+if get(b:, 'make_flavor', s:make_flavor) == 'microsoft'
syn region makeIdent start="\$(" end=")" contains=makeStatement,makeIdent
syn region makeIdent start="\${" end="}" contains=makeStatement,makeIdent
else
@@ -59,13 +65,31 @@
\ skipnl nextgroup=makeCommands,makeCommandError
syn region makeSpecTarget transparent matchgroup=makeSpecTarget
- \ start="^\.\(SUFFIXES\|PHONY\|DEFAULT\|PRECIOUS\|IGNORE\|SILENT\|EXPORT_ALL_VARIABLES\|KEEP_STATE\|LIBPATTERNS\|NOTPARALLEL\|DELETE_ON_ERROR\|INTERMEDIATE\|POSIX\|SECONDARY\|ONESHELL\)\>\s*:\{1,2}[^:=]"rs=e-1
+ \ start="^\.\(SUFFIXES\|PHONY\|DEFAULT\|PRECIOUS\|IGNORE\|SILENT\|NOTPARALLEL\|POSIX\)\>\s*:\{1,2}[^:=]"rs=e-1
\ end="[^\\]$" keepend
\ contains=makeIdent,makeSpecTarget,makeNextLine,makeComment skipnl nextGroup=makeCommands
-syn match makeSpecTarget "^\.\(SUFFIXES\|PHONY\|DEFAULT\|PRECIOUS\|IGNORE\|SILENT\|EXPORT_ALL_VARIABLES\|KEEP_STATE\|LIBPATTERNS\|NOTPARALLEL\|DELETE_ON_ERROR\|INTERMEDIATE\|POSIX\|SECONDARY\|ONESHELL\)\>\s*::\=\s*$"
+syn match makeSpecTarget "^\.\(SUFFIXES\|PHONY\|DEFAULT\|PRECIOUS\|IGNORE\|SILENT\|NOTPARALLEL\|POSIX\)\>\s*::\=\s*$"
\ contains=makeIdent,makeComment
\ skipnl nextgroup=makeCommands,makeCommandError
+if get(b:, 'make_flavor', s:make_flavor) == 'bsd'
+ syn region makeSpecTarget transparent matchgroup=makeSpecTarget
+ \ start="^\.DELETE_ON_ERROR\>\s*:\{1,2}[^:=]"rs=e-1
+ \ end="[^\\]$" keepend
+ \ contains=makeIdent,makeSpecTarget,makeNextLine,makeComment skipnl nextGroup=makeCommands
+ syn match makeSpecTarget "^\.DELETE_ON_ERROR\>\s*::\=\s*$"
+ \ contains=makeIdent,makeComment
+ \ skipnl nextgroup=makeCommands,makeCommandError
+elseif get(b:, 'make_flavor', s:make_flavor) == 'gnu'
+ syn region makeSpecTarget transparent matchgroup=makeSpecTarget
+ \ start="^\.\(EXPORT_ALL_VARIABLES\|DELETE_ON_ERROR\|INTERMEDIATE\|KEEP_STATE\|LIBPATTERNS\|ONESHELL\|SECONDARY\)\>\s*:\{1,2}[^:=]"rs=e-1
+ \ end="[^\\]$" keepend
+ \ contains=makeIdent,makeSpecTarget,makeNextLine,makeComment skipnl nextGroup=makeCommands
+ syn match makeSpecTarget "^\.\(EXPORT_ALL_VARIABLES\|DELETE_ON_ERROR\|INTERMEDIATE\|KEEP_STATE\|LIBPATTERNS\|ONESHELL\|SECONDARY\)\>\s*::\=\s*$"
+ \ contains=makeIdent,makeComment
+ \ skipnl nextgroup=makeCommands,makeCommandError
+endif
+
syn match makeCommandError "^\s\+\S.*" contained
syn region makeCommands contained start=";"hs=s+1 start="^\t"
\ end="^[^\t#]"me=e-1,re=e-1 end="^$"
@@ -74,17 +98,19 @@
syn match makeCmdNextLine "\\\n."he=e-1 contained
" some directives
-syn match makePreCondit "^ *\(ifn\=\(eq\|def\)\>\|else\(\s\+ifn\=\(eq\|def\)\)\=\>\|endif\>\)"
syn match makeInclude "^ *[-s]\=include\s.*$"
-syn match makeStatement "^ *vpath"
syn match makeExport "^ *\(export\|unexport\)\>"
-syn match makeOverride "^ *override\>"
-" Statements / Functions (GNU make)
-syn match makeStatement contained "(\(abspath\|addprefix\|addsuffix\|and\|basename\|call\|dir\|error\|eval\|file\|filter-out\|filter\|findstring\|firstword\|flavor\|foreach\|guile\|if\|info\|join\|lastword\|notdir\|or\|origin\|patsubst\|realpath\|shell\|sort\|strip\|subst\|suffix\|value\|warning\|wildcard\|word\|wordlist\|words\)\>"ms=s+1
+if get(b:, 'make_flavor', s:make_flavor) == 'gnu'
+ " Statements / Functions (GNU make)
+ syn match makePreCondit "^ *\(ifn\=\(eq\|def\)\>\|else\(\s\+ifn\=\(eq\|def\)\)\=\>\|endif\>\)"
+ syn match makeStatement "^ *vpath\>"
+ syn match makeOverride "^ *override\>"
+ syn match makeStatement contained "[({]\(abspath\|addprefix\|addsuffix\|and\|basename\|call\|dir\|error\|eval\|file\|filter-out\|filter\|findstring\|firstword\|flavor\|foreach\|guile\|if\|info\|intcmp\|join\|lastword\|let\|notdir\|or\|origin\|patsubst\|realpath\|shell\|sort\|strip\|subst\|suffix\|value\|warning\|wildcard\|word\|wordlist\|words\)\>"ms=s+1
+endif
" Comment
if !exists("make_no_comments")
- if exists("b:make_microsoft") || exists("make_microsoft")
+ if get(b:, 'make_flavor', s:make_flavor) == 'microsoft'
syn match makeComment "#.*" contains=@Spell,makeTodo
else
syn region makeComment start="#" end="^$" end="[^\\]$" keepend contains=@Spell,makeTodo