[reactos] 44/48: [CMD] The "special" environment-like variables are available only when extensions are enabled.

[Hermès Bélusca-Maïto]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=04e0fe0652553b1472d425...

commit 04e0fe0652553b1472d4255fa05f87110b1f1870
Author:     Hermès Bélusca-Maïto [e-mail]
AuthorDate: Sun Jul 12 23:27:35 2020 +0200
Commit:     Hermès Bélusca-Maïto [e-mail]
CommitDate: Wed Aug 19 20:36:12 2020 +0200

[CMD] The "special" environment-like variables are available only when extensions are enabled.

The "special" variables are: CD, DATE, TIME, RANDOM,
    CMDCMDLINE, CMDEXTVERSION, ERRORLEVEL (and on Win7+,
    HIGHESTNUMANODENUMBER).
---
 base/shell/cmd/cmd.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/base/shell/cmd/cmd.c b/base/shell/cmd/cmd.c
index 3a57c04ef33..1cc0a0663f5 100644
--- a/base/shell/cmd/cmd.c
+++ b/base/shell/cmd/cmd.c
@@ -902,7 +902,11 @@ GetEnvVarOrSpecial(LPCTSTR varName)
     if (var)
         return var;

-    /* env var doesn't exist, look for a "special" one */
+    /* The environment variable doesn't exist, look for
+     * a "special" one only if extensions are enabled. */
+    if (!bEnableExtensions)
+        return NULL;
+
     /* %CD% */
     if (_tcsicmp(varName, _T("CD")) == 0)
     {