patch 8.1.0386: cannot test with non-default option value
Problem: Cannot test with non-default option value.
Solution: Add test_option_not_set().
diff --git a/runtime/doc/eval.txt b/runtime/doc/eval.txt
index 2ff124b..fdac405 100644
--- a/runtime/doc/eval.txt
+++ b/runtime/doc/eval.txt
@@ -2473,6 +2473,7 @@
test_null_list() List null value for testing
test_null_partial() Funcref null value for testing
test_null_string() String null value for testing
+test_option_not_set({name}) none reset flag indicating option was set
test_override({expr}, {val}) none test with Vim internal overrides
test_settime({expr}) none set current time for testing
timer_info([{id}]) List information about timers
@@ -8737,6 +8738,15 @@
test_null_string() *test_null_string()*
Return a String that is null. Only useful for testing.
+test_option_not_set({name}) *test_option_not_set()*
+ Reset the flag that indicates option {name} was set. Thus it
+ looks like it still has the default value. Use like this: >
+ set ambiwidth=double
+ call test_option_not_set('ambiwidth')
+< Now the 'ambiwidth' option behaves like it was never changed,
+ even though the value is "double".
+ Only to be used for testing!
+
test_override({name}, {val}) *test_override()*
Overrides certain parts of Vims internal processing to be able
to run tests. Only to be used for testing Vim!