patch 8.2.0935: flattening a list with existing code is slow
Problem: Flattening a list with existing code is slow.
Solution: Add flatten(). (Mopp, closes #3676)
diff --git a/src/testdir/Make_all.mak b/src/testdir/Make_all.mak
index 7402067..2a133ef 100644
--- a/src/testdir/Make_all.mak
+++ b/src/testdir/Make_all.mak
@@ -135,6 +135,7 @@
test_find_complete \
test_findfile \
test_fixeol \
+ test_flatten \
test_float_func \
test_fnameescape \
test_fnamemodify \
@@ -373,6 +374,7 @@
test_find_complete.res \
test_findfile.res \
test_fixeol.res \
+ test_flatten.res \
test_float_func.res \
test_fnameescape.res \
test_fold.res \