New --debug-expansion option.

* txr.c (opt_dbg_expansion): New global variable.
(help): Print summary for --debug-expansion.
(txr_main): Recognize new option and set flag.

* parser.y (parse_once): Suppress debug stepping around parser
if opt_dbg_expansion is false.

* txr.1 (opt_dbg_expansion): Declared.

* txr.1: Documented new option.

1 files changed, 1 insertions, 0 deletions

diff --git a/txr.h b/txr.h
index 0fe34df4..6d9d82ce 100644
--- a/txr.h
+++ b/txr.h
@@ -37,6 +37,7 @@ extern int opt_noninteractive;
 extern int opt_compat;
 extern int opt_debugger;
 extern int opt_dbg_autoload;
+extern int opt_dbg_expansion;
 extern alloc_bytes_t opt_gc_delta;
 extern const wchli_t *version;
 extern const wchar_t *progname;