apache: disallow backslashes in rewrite_arg type

backlashes can be used to create invalid config (e.g. using one at the
end of the line), and don't seem to be particularly useful
here. Disallow entirely for now.

diff --git a/src/plugins/apache.sml b/src/plugins/apache.sml
index 9d180ab..aecc2e1 100644 (file)
--- a/src/plugins/apache.sml
+++ b/src/plugins/apache.sml
@@ -97,7 +97,7 @@ val _ = Env.type_one "proxy_reverse_target"
 
 val _ = Env.type_one "rewrite_arg"
        Env.string
-       (CharVector.all (fn ch => (Char.isGraph ch) andalso not (List.exists (fn c => ch = c) [ #"[", #"]", #",", #"\"", #"'", #"=", #":" ])))
+       (CharVector.all (fn ch => (Char.isGraph ch) andalso not (List.exists (fn c => ch = c) [ #"[", #"]", #",", #"\"", #"'", #"=", #":", "\\" ])))
 
 val _ = Env.type_one "suexec_flag"
        Env.bool