File _service:tar_scm:backport-Make-the-debug-2-outp... of Package patch

File _service:tar_scm:backport-Make-the-debug-2-output-more-useful.patch of Package patch (Revision efc2dab8f7f97a90e88661c62d16f5c5)

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From 4be3ee4d25fc777a2508fdd03dc8f701cf4ca91d Mon Sep 17 00:00:00 2001
From: Andreas Gruenbacher <agruen@gnu.org>
Date: Fri, 17 Aug 2018 10:31:22 +0200
Subject: [PATCH] Make the (debug & 2) output more useful

* src/pch.c (another_hunk): In the (debug & 2) output, fix how empty
lines that are not part of the patch context are printed.  Also, add
newlines to lines that are missing them to keep the output readable.

Signed-off-by: Xibo.Wang <wangxb12@chinatelecom.cn>
---
 src/pch.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/src/pch.c b/src/pch.c
index 4368561..aa0caf4 100644
--- a/src/pch.c
+++ b/src/pch.c
@@ -1923,8 +1923,13 @@ another_hunk (enum diff difftype, bool rev)
 	lin i;
 
 	for (i = 0; i <= p_end + 1; i++) {
-	    fprintf (stderr, "%s %c",
-		     format_linenum (numbuf0, i),
+	    fputs (format_linenum (numbuf0, i), stderr);
+	    if (p_Char[i] == '\n')
+	      {
+	        fputc('\n', stderr);
+		continue;
+	      }
+	    fprintf (stderr, " %c",
 		     p_Char[i]);
 	    if (p_Char[i] == '*')
 	      fprintf (stderr, " %s,%s\n",
@@ -1937,7 +1942,8 @@ another_hunk (enum diff difftype, bool rev)
 	    else if (p_Char[i] != '^')
 	      {
 		fputs(" |", stderr);
-		pch_write_line (i, stderr);
+		if (! pch_write_line (i, stderr))
+		  fputc('\n', stderr);
 	      }
 	    else
 	      fputc('\n', stderr);
-- 
1.8.3.1