jruby/src/jruby/kernel/rbconfig.rb at test_github_468 · MSNexploder/jruby · GitHub

21 lines (20 loc) · 527 Bytes

module RbConfig

def RbConfig::expand(val, config = CONFIG)

newval = val.gsub(/\$\$|\$$([^()]+)$|\$\{([^{}]+)\}/) {

var = $&

if !(v = $1 || $2)

'$'

elsif key = config[v = v[/\A[^:]+(?=(?::(.*?)=(.*))?\z)/]]

pat, sub = $1, $2

config[v] = false

config[v] = RbConfig::expand(key, config)

key = key.gsub(/#{Regexp.quote(pat)}(?=\s|\z)/n) {sub} if pat

key

else

var

end

}

val.replace(newval) unless newval == val

val

end

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