commit ff81775f4eb6ab9a91b75e4031e8216654c0c76a
Author: Andreas Gruenbacher <agruen@gnu.org>
Date:   Fri Aug 17 10:31:22 2018 +0200

    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.

diff --git a/src/pch.c b/src/pch.c
index 1bb3153..e92bc64 100644
--- a/src/pch.c
+++ b/src/pch.c
@@ -1916,8 +1916,13 @@ 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",
@@ -1930,7 +1935,8 @@ 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);