[spec/builtin-vars] Simple case to show 'local unset cell' semantics.

Related to #706.
oils-for-unix · Apr 17, 2020 · a663c11 · a663c11
1 parent 716b5dc
commit a663c11
Showing 1 changed file with 22 additions and 0 deletions.
diff --git a/spec/builtin-vars.test.sh b/spec/builtin-vars.test.sh
@@ -368,6 +368,28 @@ level2=yy
 level2=
 ## END
 
+#### unset of local reveals variable in higher scope
+
+# Oil has a RARE behavior here (matching yash and mksh), but at least it's
+# consistent.
+
+x=global
+f() {
+  local x=foo
+  echo x=$x
+  unset x
+  echo x=$x
+}
+f
+## STDOUT:
+x=foo
+x=global
+## END
+## OK dash/bash/zsh/ash STDOUT:
+x=foo
+x=
+## END
+
 #### Unset invalid variable name
 unset %
 echo status=$?