Merge #6479 from bfredl/tolower

remove vim_tolower/etc functions with broken locale-dependent behavior

1 files changed, 34 insertions, 0 deletions

diff --git a/src/nvim/testdir/test_normal.vim b/src/nvim/testdir/test_normal.vim
index a22dca35cc..c529971528 100644
--- a/src/nvim/testdir/test_normal.vim
+++ b/src/nvim/testdir/test_normal.vim
@@ -1606,6 +1606,40 @@ fun! Test_normal30_changecase()
   norm! V~
   call assert_equal('THIS IS A simple test: äüöss', getline('.'))
 
+  " Turkish ASCII turns to multi-byte.  On Mac the Turkish locale is available
+  " but toupper()/tolower() don't do the right thing.
+  if !has('mac') && !has('osx')
+    try
+      lang tr_TR.UTF-8
+      set casemap=
+      call setline(1, 'iI')
+      1normal gUU
+      call assert_equal("\u0130I", getline(1))
+      call assert_equal("\u0130I", toupper("iI"))
+
+      call setline(1, 'iI')
+      1normal guu
+      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
+      throw 'Skipped: Turkish locale not available'
+    endtry
+  endif
+
   " clean up
   bw!
 endfunc