Merge pull request #4131 from ZyX-I/json-functions

Add JSON support

1 files changed, 19 insertions, 3 deletions

diff --git a/src/nvim/api/vim.c b/src/nvim/api/vim.c
index 9279f6b469..10110b0f62 100644
--- a/src/nvim/api/vim.c
+++ b/src/nvim/api/vim.c
@@ -331,15 +331,31 @@ Object vim_get_var(String name, Error *err)
   return dict_get_value(&globvardict, name, err);
 }
 
-/// Sets a global variable. Passing 'nil' as value deletes the variable.
+/// Sets a global variable
 ///
 /// @param name The variable name
 /// @param value The variable value
 /// @param[out] err Details of an error that may have occurred
-/// @return the old value if any
+/// @return The old value or nil if there was no previous value.
+///
+///         @warning It may return nil if there was no previous value
+///                  or if previous value was `v:null`.
 Object vim_set_var(String name, Object value, Error *err)
 {
-  return dict_set_value(&globvardict, name, value, err);
+  return dict_set_value(&globvardict, name, value, false, err);
+}
+
+/// Removes a global variable
+///
+/// @param name The variable name
+/// @param[out] err Details of an error that may have occurred
+/// @return The old value or nil if there was no previous value.
+///
+///         @warning It may return nil if there was no previous value
+///                  or if previous value was `v:null`.
+Object vim_del_var(String name, Error *err)
+{
+  return dict_set_value(&globvardict, name, NIL, true, err);
 }
 
 /// Gets a vim variable