patch 8.0.0623: error for invalid regexp is not very informative
Problem: The message "Invalid range" is used for multiple errors.
Solution: Add two more specific error messages. (Itchyny, Ken Hamada)
diff --git a/src/testdir/test_regexp_utf8.vim b/src/testdir/test_regexp_utf8.vim
index c54b650..bec5e0e 100644
--- a/src/testdir/test_regexp_utf8.vim
+++ b/src/testdir/test_regexp_utf8.vim
@@ -137,3 +137,20 @@
call s:classes_test()
set re=0
endfunc
+
+func Test_reversed_range()
+ for re in range(0, 2)
+ exe 'set re=' . re
+ call assert_fails('call match("abc def", "[c-a]")', 'E944:')
+ endfor
+ set re=0
+endfunc
+
+func Test_large_class()
+ set re=1
+ call assert_fails('call match("abc def", "[\u3000-\u4000]")', 'E945:')
+ set re=2
+ call assert_equal(0, 'abc def' =~# '[\u3000-\u4000]')
+ call assert_equal(1, "\u3042" =~# '[\u3000-\u4000]')
+ set re=0
+endfunc