Improved M4 quotation

This fixes M4 quotation of certain strings beginning with `yy` (in
section 3 of the input file only) and character literals.  The new
quotation method is also less brittle and faster.

Tests that relied on the old behavior were fixed.

Also, `yyconst` is no longer defined; use `const` (which it
unconditionally was defined to) instead.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/nfa.c b/src/nfa.c
index 816c356..9143cf6 100644
--- a/src/nfa.c
+++ b/src/nfa.c
@@ -287,6 +287,7 @@ void    finish_rule (int mach, int variable_trail_rule, int headcnt, int trailcn
 		add_action ("YY_RULE_SETUP\n");
 
 	line_directive_out(NULL, 1);
+        add_action("[[");
 }