patch 8.2.2177: pattern "^" does not match if first character is combining

Problem:    Pattern "^" does not match if the first character in the line is
            combining. (Rene Kita)
Solution:   Do accept a match at the start of the line. (closes #6963)
diff --git a/src/testdir/test_regexp_utf8.vim b/src/testdir/test_regexp_utf8.vim
index a1c06b4..7870240 100644
--- a/src/testdir/test_regexp_utf8.vim
+++ b/src/testdir/test_regexp_utf8.vim
@@ -501,4 +501,15 @@
   close!
 endfunc
 
+" Check that "^" matches even when the line starts with a combining char
+func Test_match_start_of_line_combining()
+  new
+  call setline(1, ['', "\u05ae", ''])
+  exe "normal gg/^\<CR>"
+  call assert_equal(2, getcurpos()[1])
+  bwipe!
+endfunc
+
+
+
 " vim: shiftwidth=2 sts=2 expandtab