From: Mark Wooding <mdw@distorted.org.uk>
Date: Fri, 23 May 2014 17:22:44 +0000 (+0100)
Subject: cgi.py: Don't crash if we have three values for a parameter.
X-Git-Tag: 1.1.0~13
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~mdw/git/chopwood/commitdiff_plain/9d6ec9ac56508d35a0f66eb6747782dbc996735a?ds=sidebyside

cgi.py: Don't crash if we have three values for a parameter.

The first time we see a parameter, we add it to `PARAMDICT'.  The second
time, we remove it again because it's multivalued.  The third time, we
try to remove it again, and that fails because it's already gone.
---

diff --git a/cgi.py b/cgi.py
index cfa26f7..69b9038 100644
--- a/cgi.py
+++ b/cgi.py
@@ -419,7 +419,8 @@ def cgiparse():
     else:
       PARAM.append((k, v))
       if k in seen:
-        del PARAMDICT[k]
+        try: del PARAMDICT[k]
+        except KeyError: pass
       else:
         PARAMDICT[k] = v
         seen.add(k)