patch 8.1.1321: no docs or tests for listener functions
Problem: No docs or tests for listener functions.
Solution: Add help and tests for listener_add() and listener_remove().
Invoke the callbacks before redrawing.
diff --git a/src/testdir/Make_all.mak b/src/testdir/Make_all.mak
index 1f50bd8..7dc7e36 100644
--- a/src/testdir/Make_all.mak
+++ b/src/testdir/Make_all.mak
@@ -168,6 +168,7 @@
test_lispwords \
test_listchars \
test_listdict \
+ test_listener \
test_listlbr \
test_listlbr_utf8 \
test_lua \
@@ -359,6 +360,7 @@
test_lineending.res \
test_listchars.res \
test_listdict.res \
+ test_listener.res \
test_listlbr.res \
test_lua.res \
test_makeencoding.res \