commit 76e775847f4954b63dc72afe34d9d921c6688b31

Author: Andreas Gruenbacher <agruen@gnu.org>

Date:   Tue Jul 16 01:16:28 2019 +0200

    Fix failed assertion 'outstate->after_newline'

    The assertion triggers when the -o FILE option is used, more than one output

    file is written into FILE, and one of those files (except the last one) ends in

    the middle of a line.

    * src/patch.c (main): Fix the case described above.

diff --git a/src/patch.c b/src/patch.c

index 02fd982..3794319 100644

--- a/src/patch.c

+++ b/src/patch.c

@@ -369,6 +369,13 @@ main (int argc, char **argv)

 	    /* outstate.ofp now owns the file descriptor */

 	    outfd = -1;

 	  }

+	else

+	  {

+	    /* When writing to a single output file (-o FILE), always pretend

+	       that the output file ends in a newline.  Otherwise, when another

+	       file is written to the same output file, apply_hunk will fail.  */

+	    outstate.after_newline = true;

+	  }

 	/* find out where all the lines are */

 	if (!skip_rest_of_patch) {