extras/exec_cgi: allow passing custom env

Sometimes a CGI script wants to run with some environment
variables set or overridden.  Allow it.

1 files changed, 2 insertions, 1 deletions

diff --git a/extras/exec_cgi.rb b/extras/exec_cgi.rb
index 5eadef8..f718f7b 100644
--- a/extras/exec_cgi.rb
+++ b/extras/exec_cgi.rb
@@ -65,6 +65,7 @@ class ExecCgi
   ).map(&:freeze)  # frozen strings are faster for Hash assignments
 
   def initialize(*args)
+    @env = Hash === args[0] ? args.shift : {}
     @args = args
     first = args[0] or
       raise ArgumentError, "need path to executable"
@@ -80,7 +81,7 @@ class ExecCgi
     env.each { |key,val| cgi_env[key] = val if key =~ /\AHTTP_/ }
     pipe = MyIO.pipe
     errbody = pipe[0]
-    errbody.my_pid = Process.spawn(cgi_env, *@args,
+    errbody.my_pid = Process.spawn(cgi_env.merge!(@env), *@args,
                                    out: pipe[1], close_others: true)
     pipe[1].close
     pipe = pipe[0]