file creation

autoload/ingo/compat/regexp.vim

@@ -0,0 +1,29 @@
+" ingo/compat/regexp.vim: Functions for regular expression compatibility.
+"
+" DEPENDENCIES:
+"
+" Copyright: (C) 2015 Ingo Karkat
+"   The VIM LICENSE applies to this script; see ':help copyright'.
+"
+" Maintainer:	Ingo Karkat <ingo@karkat.de>
+"
+" REVISION	DATE		REMARKS
+"   1.024.001	20-Feb-2015	file creation
+
+if exists('+regexpengine') " {{{2
+    " XXX: The new NFA-based regexp engine has a problem with non-greedy \s\{-}
+    " match together with the branches where only one is anchored; cp.
+    " http://article.gmane.org/gmane.editors.vim.devel/43712
+    " XXX: The new NFA-based regexp engine has a problem with the /\@<= pattern
+    " in combination with a back reference \1; cp.
+    " http://article.gmane.org/gmane.editors.vim.devel/46596
+    function! ingo#compat#regexp#GetOldEnginePrefix()
+	return '\%#=1'
+    endfunction
+else
+    function! ingo#compat#regexp#GetOldEnginePrefix()
+	return ''
+    endfunction
+endif
+
+" vim: set ts=8 sts=4 sw=4 noexpandtab ff=unix fdm=syntax :