neovim

commit 1355861b926a05e411ba3d42fa85a2fe238aea8d
parent 3ac952d4e27f4e2454332a730310316fe13fd4a3
Author: zeertzjq <zeertzjq@outlook.com>
Date:   Sun, 23 Apr 2023 17:44:08 +0800

fix(typval): don't treat v:null as truthy (#23281)


Diffstat:
M
src/nvim/eval/typval.c
 | 
2
+-
M
test/functional/vimscript/special_vars_spec.lua
 | 
6
++++++

2 files changed, 7 insertions(+), 1 deletion(-)
diff --git a/src/nvim/eval/typval.c b/src/nvim/eval/typval.c
@@ -4224,7 +4224,7 @@ bool tv2bool(const typval_T *const tv)
   case VAR_BOOL:
     return tv->vval.v_bool == kBoolVarTrue;
   case VAR_SPECIAL:
-    return tv->vval.v_special == kSpecialVarNull;
+    return tv->vval.v_special != kSpecialVarNull;
   case VAR_BLOB:
     return tv->vval.v_blob != NULL && tv->vval.v_blob->bv_ga.ga_len > 0;
   case VAR_UNKNOWN:
diff --git a/test/functional/vimscript/special_vars_spec.lua b/test/functional/vimscript/special_vars_spec.lua
@@ -130,6 +130,12 @@ describe('Special values', function()
     eq("v:false", eval('"" . v:false'))
   end)
 
+  it('work with ?? (falsy operator)', function()
+    eq(true, eval('v:true ?? 42'))
+    eq(42, eval('v:false ?? 42'))
+    eq(42, eval('v:null ?? 42'))
+  end)
+
   it('work with type()', function()
     eq(6, funcs.type(true))
     eq(6, funcs.type(false))