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From: Jilles Tjoelker <jilles@FreeBSD.org>
Date: Sun, 20 Dec 2009 20:51:20 +0000 (UTC)
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Subject: svn commit: r200760 - stable/8/bin/sh
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Author: jilles
Date: Sun Dec 20 20:51:20 2009
New Revision: 200760
URL: http://svn.freebsd.org/changeset/base/200760

Log:
  MFC r198173: sh: show more info about syntax errors in command substitution:
  the line number where the command substitution started.
  This applies to both the $() and `` forms but is most useful for ``
  because the other line number is relative to the enclosed text there.
  (For older versions, -v can be used as a workaround.)

Modified:
  stable/8/bin/sh/parser.c
Directory Properties:
  stable/8/bin/sh/   (props changed)

Modified: stable/8/bin/sh/parser.c
==============================================================================
--- stable/8/bin/sh/parser.c	Sun Dec 20 19:45:46 2009	(r200759)
+++ stable/8/bin/sh/parser.c	Sun Dec 20 20:51:20 2009	(r200760)
@@ -1310,6 +1310,7 @@ parsebackq: {
 	struct jmploc *const savehandler = handler;
 	int savelen;
 	int saveprompt;
+	const int bq_startlinno = plinno;
 
 	savepbq = parsebackquote;
 	if (setjmp(jmploc.loc)) {
@@ -1317,6 +1318,10 @@ parsebackq: {
 			ckfree(str);
 		parsebackquote = 0;
 		handler = savehandler;
+		if (exception == EXERROR) {
+			startlinno = bq_startlinno;
+			synerror("Error in command substitution");
+		}
 		longjmp(handler->loc, 1);
 	}
 	INTOFF;