Fix M4 quoting of section 3.

This fixes M4 quoting of section 3 of the input file, including escape
sequences and character constants.

Tests were added to verify the behavior in section 3 with respect to
quoting. Both escaping of quotes and quoting of potential macro-start
characters are tested. Existing tests were also fixed to account for the new -- and now correct -- behavior. Many tests relied on the old behavior of expanding M4 macros
in section 3.  They needed to be updated for the new behavior.

1 files changed, 5 insertions, 5 deletions

diff --git a/tests/basic_r.l b/tests/basic_r.l
index ba5734c..43d3a88 100644
--- a/tests/basic_r.l
+++ b/tests/basic_r.l
@@ -55,13 +55,13 @@ int main(void);
 int main (void)
 {
     yyscan_t  lexer;
-    yylex_init( &lexer );
-    yyset_out ( stdout,lexer);
-    yyset_in  ( stdin, lexer);
-    while( yylex(lexer) )
+    testlex_init( &lexer );
+    testset_out ( stdout,lexer);
+    testset_in  ( stdin, lexer);
+    while( testlex(lexer) )
     {
     }
-    yylex_destroy( lexer );
+    testlex_destroy( lexer );
     printf("TEST RETURNING OK.\n");
     return 0;
 }