# HG changeset patch
# User Christian Brabandt <cb@256bit.org>
# Date 1450361706 -3600
# Node ID 645abb8d8dafdc77b00012d3a294d252a4f50597
# Parent  8a8a4b6d799c73a8c7916776ad885c3361a35502
commit https://github.com/vim/vim/commit/75e3ad019933f4879137775549261bf51985ab7d
Author: Bram Moolenaar <Bram@vim.org>
Date:   Thu Dec 17 15:07:32 2015 +0100

    patch 7.4.975
    Problem:    Using ":sort" on a very big file sometimes causes text to be
                corrupted. (John Beckett)
    Solution:   Copy the line into a buffer before calling ml_append().

diff --git a/src/ex_cmds.c b/src/ex_cmds.c
--- a/src/ex_cmds.c
+++ b/src/ex_cmds.c
@@ -540,10 +540,11 @@ ex_sort(eap)
 	if (!unique || i == 0
 		|| (sort_ic ? STRICMP(s, sortbuf1) : STRCMP(s, sortbuf1)) != 0)
 	{
-	    if (ml_append(lnum++, s, (colnr_T)0, FALSE) == FAIL)
+	    /* Copy the line into a buffer, it may become invalid in
+	     * ml_append(). And it's needed for "unique". */
+	    STRCPY(sortbuf1, s);
+	    if (ml_append(lnum++, sortbuf1, (colnr_T)0, FALSE) == FAIL)
 		break;
-	    if (unique)
-		STRCPY(sortbuf1, s);
 	}
 	fast_breakcheck();
 	if (got_int)
diff --git a/src/version.c b/src/version.c
--- a/src/version.c
+++ b/src/version.c
@@ -742,6 +742,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    975,
+/**/
     974,
 /**/
     973,