Update runtime files.
diff --git a/runtime/syntax/make.vim b/runtime/syntax/make.vim
index 16e66bc..377e4450 100644
--- a/runtime/syntax/make.vim
+++ b/runtime/syntax/make.vim
@@ -3,7 +3,7 @@
" Maintainer: Roland Hieber <rohieb+vim-iR0jGdkV@rohieb.name>
" Previous Maintainer: Claudio Fleiner <claudio@fleiner.com>
" URL: https://github.com/vim/vim/syntax/make.vim
-" Last Change: 2019 Feb 08
+" Last Change: 2019 Apr 02
" quit when a syntax file was already loaded
if exists("b:current_syntax")
@@ -19,7 +19,7 @@
syn match makeNextLine "\\\n\s*"
" some directives
-syn match makePreCondit "^ *\(ifeq\>\|else\>\|endif\>\|ifneq\>\|ifdef\>\|ifndef\>\)"
+syn match makePreCondit "^ *\(ifn\=\(eq\|def\)\>\|else\(\s\+ifn\=\(eq\|def\)\)\=\>\|endif\>\)"
syn match makeInclude "^ *[-s]\=include"
syn match makeStatement "^ *vpath"
syn match makeExport "^ *\(export\|unexport\)\>"
@@ -32,8 +32,8 @@
" Microsoft Makefile specials
syn case ignore
-syn match makeInclude "^! *include"
-syn match makePreCondit "! *\(cmdswitches\|error\|message\|include\|if\|ifdef\|ifndef\|else\|elseif\|else if\|else\s*ifdef\|else\s*ifndef\|endif\|undef\)\>"
+syn match makeInclude "^!\s*include"
+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
" identifiers
@@ -101,17 +101,17 @@
" Define the default highlighting.
" Only when an item doesn't have highlighting yet
-hi def link makeNextLine makeSpecial
+hi def link makeNextLine makeSpecial
hi def link makeCmdNextLine makeSpecial
-hi def link makeSpecTarget Statement
+hi def link makeSpecTarget Statement
if !exists("make_no_commands")
-hi def link makeCommands Number
+hi def link makeCommands Number
endif
-hi def link makeImplicit Function
+hi def link makeImplicit Function
hi def link makeTarget Function
hi def link makeInclude Include
-hi def link makePreCondit PreCondit
-hi def link makeStatement Statement
+hi def link makePreCondit PreCondit
+hi def link makeStatement Statement
hi def link makeIdent Identifier
hi def link makeSpecial Special
hi def link makeComment Comment