patch 8.0.0554: toupper and tolower don't work properly for Turkish
Problem: Toupper and tolower don't work properly for Turkish when 'casemap'
contains "keepascii". (Bjorn Linse)
Solution: When 'casemap' contains "keepascii" use ASCII toupper/tolower.
diff --git a/src/testdir/test_normal.vim b/src/testdir/test_normal.vim
index aa82992..155ddbf 100644
--- a/src/testdir/test_normal.vim
+++ b/src/testdir/test_normal.vim
@@ -1619,6 +1619,17 @@
call assert_equal("i\u0131", getline(1))
call assert_equal("i\u0131", tolower("iI"))
+ set casemap&
+ call setline(1, 'iI')
+ 1normal gUU
+ call assert_equal("II", getline(1))
+ call assert_equal("II", toupper("iI"))
+
+ call setline(1, 'iI')
+ 1normal guu
+ call assert_equal("ii", getline(1))
+ call assert_equal("ii", tolower("iI"))
+
lang en_US.UTF-8
catch /E197:/
" can't use Turkish locale