===================================================================
RCS file: /cvs/mandoc/mandoc.h,v
retrieving revision 1.277
retrieving revision 1.281
diff -u -p -r1.277 -r1.281
--- mandoc/mandoc.h	2022/05/19 15:37:47	1.277
+++ mandoc/mandoc.h	2022/08/16 17:30:11	1.281
@@ -1,4 +1,4 @@
-/* $Id: mandoc.h,v 1.277 2022/05/19 15:37:47 schwarze Exp $ */
+/* $Id: mandoc.h,v 1.281 2022/08/16 17:30:11 schwarze Exp $ */
 /*
  * Copyright (c) 2012-2022 Ingo Schwarze <schwarze@openbsd.org>
  * Copyright (c) 2010, 2011, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
@@ -20,8 +20,11 @@
  */
 
 #define ASCII_NBRSP	 31  /* non-breaking space */
-#define	ASCII_HYPH	 30  /* breakable hyphen */
-#define	ASCII_BREAK	 29  /* breakable zero-width space */
+#define ASCII_NBRZW	 30  /* non-breaking zero-width space */
+#define ASCII_BREAK	 29  /* breakable zero-width space */
+#define ASCII_HYPH	 28  /* breakable hyphen */
+#define ASCII_ESC	 27  /* escape sequence from copy-in processing */
+#define ASCII_TABREF	 26  /* reset tab reference position */
 
 /*
  * Status level.  This refers to both internal status (i.e., whilst
@@ -172,7 +175,7 @@ enum	mandocerr {
 	MANDOCERR_FI_BLANK, /* blank line in fill mode, using .sp */
 	MANDOCERR_FI_TAB, /* tab in filled text */
 	MANDOCERR_EOS, /* new sentence, new line */
-	MANDOCERR_ESC_BAD, /* invalid escape sequence: esc */
+	MANDOCERR_ESC_ARG, /* invalid escape sequence argument: esc */
 	MANDOCERR_ESC_UNDEF, /* undefined escape, printing literally: char */
 	MANDOCERR_STR_UNDEF, /* undefined string, using "": name */
 
@@ -234,6 +237,12 @@ enum	mandocerr {
 	MANDOCERR_ARG_SKIP, /* skipping all arguments: macro args */
 	MANDOCERR_ARG_EXCESS, /* skipping excess arguments: macro ... args */
 	MANDOCERR_DIVZERO, /* divide by zero */
+
+	/* related to escape sequences */
+	MANDOCERR_ESC_INCOMPLETE, /* incomplete escape sequence: esc */
+	MANDOCERR_ESC_BADCHAR, /* invalid special character: esc */
+	MANDOCERR_ESC_UNKCHAR, /* unknown special character: esc */
+	MANDOCERR_ESC_DELIM, /* invalid escape argument delimiter: esc */
 
 	MANDOCERR_UNSUPP, /* ===== start of unsupported features ===== */