# HG changeset patch
# User Bram Moolenaar <Bram@vim.org>
# Date 1616438705 -3600
# Node ID 55631f8e0730f1d417a28ef78bf946c3cfd89e24
# Parent  f8f6ec7d765236bf5c4f185291f6429ca4e23022
patch 8.2.2644: prop_clear() causes a screen update even when nothing changed

Commit: https://github.com/vim/vim/commit/da1dbed0dfac00952b42982f8fffa42c4f5ed0c8
Author: Bram Moolenaar <Bram@vim.org>
Date:   Mon Mar 22 19:43:34 2021 +0100

    patch 8.2.2644: prop_clear() causes a screen update even when nothing changed

    Problem:    prop_clear() causes a screen update even when nothing changed.
    Solution:   Only redraw when a property was cleared. (Dominique Pell?)

diff --git a/src/textprop.c b/src/textprop.c
--- a/src/textprop.c
+++ b/src/textprop.c
@@ -535,6 +535,7 @@ f_prop_clear(typval_T *argvars, typval_T
     linenr_T end = start;
     linenr_T lnum;
     buf_T    *buf = curbuf;
+    int	    did_clear = FALSE;
 
     if (argvars[1].v_type != VAR_UNKNOWN)
     {
@@ -562,6 +563,7 @@ f_prop_clear(typval_T *argvars, typval_T
 	len = STRLEN(text) + 1;
 	if ((size_t)buf->b_ml.ml_line_len > len)
 	{
+	    did_clear = TRUE;
 	    if (!(buf->b_ml.ml_flags & ML_LINE_DIRTY))
 	    {
 		char_u *newtext = vim_strsave(text);
@@ -575,7 +577,8 @@ f_prop_clear(typval_T *argvars, typval_T
 	    buf->b_ml.ml_line_len = (int)len;
 	}
     }
-    redraw_buf_later(buf, NOT_VALID);
+    if (did_clear)
+	redraw_buf_later(buf, NOT_VALID);
 }
 
 /*
diff --git a/src/version.c b/src/version.c
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2644,
+/**/
     2643,
 /**/
     2642,