diff options
Diffstat (limited to 'lib/Env.rb')
-rw-r--r-- | lib/Env.rb | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/lib/Env.rb b/lib/Env.rb new file mode 100644 index 0000000000..b3ee3bae8a --- /dev/null +++ b/lib/Env.rb @@ -0,0 +1,31 @@ +# Env.rb -- imports environment variables as global variables +# +# Usage: +# +# require 'Env' +# p $USER +# $USER = "matz" +# p ENV["USER"] + +for k,v in ENV + next unless /^[a-zA-Z][_a-zA-Z0-9]*/ =~ k + eval <<EOS + $#{k} = %q!#{v}! + trace_var "$#{k}", proc{|v| + ENV[%q!#{k}!] = v; + $#{k} = %q!#{v}! + if v == nil + untrace_var "$#{k}" + end + } +EOS +end + +if __FILE__ == $0 + p $TERM + $TERM = nil + p $TERM + p ENV["TERM"] + $TERM = "foo" + p ENV["TERM"] +end |