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, 4 insertions, 0 deletions

diff --git a/src/main.c b/src/main.c
index 805c48b..e0ffbc3 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1427,6 +1427,10 @@ void flexinit (int argc, char **argv)
 			break;
 		case OPT_HEX:
 			trace_hex = 1;
+                        break;
+                case OPT_NO_SECT3_ESCAPE:
+                        no_section3_escape = true;
+                        break;
 		}		/* switch */
 	}			/* while scanopt() */