From 71487a935e658e2c193188d871a1c3a7a570dbc0 Mon Sep 17 00:00:00 2001
From: Rui Abreu Ferreira <raf-ep@gmx.com>
Date: Wed, 25 Feb 2015 10:33:04 +0000
Subject: Implement os_unsetenv()

- In UNIX systems where unsetenv() is available, it is used. Otherwise
  the variables are set with the empty string.
- New check HAVE_UNSETENV for unsetenv()
- Added unit test to env_spec.lua
---
 src/nvim/os/env.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'src')

diff --git a/src/nvim/os/env.c b/src/nvim/os/env.c
index 37158f4d3c..be4b22de3a 100644
--- a/src/nvim/os/env.c
+++ b/src/nvim/os/env.c
@@ -37,6 +37,19 @@ int os_setenv(const char *name, const char *value, int overwrite)
   return setenv(name, value, overwrite);
 }
 
+/// Unset environment variable
+///
+/// For systems where unsetenv() is not available the value will be set as an
+/// empty string
+int os_unsetenv(const char *name)
+{
+#ifdef HAVE_UNSETENV
+  return unsetenv(name);
+#else
+  return os_setenv(name, "", 1);
+#endif
+}
+
 char *os_getenvname_at_index(size_t index)
 {
 # if defined(HAVE__NSGETENVIRON)
-- 
cgit