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-rw-r--r--lib/optparse.rb7
1 files changed, 6 insertions, 1 deletions
diff --git a/lib/optparse.rb b/lib/optparse.rb
index 5a86194b7e..0548a29cac 100644
--- a/lib/optparse.rb
+++ b/lib/optparse.rb
@@ -996,6 +996,7 @@ class OptionParser
end
private :notwice
+ SPLAT_PROC = proc {|*a| a}
#
# Creates an OptionParser::Switch from the parameters. The parsed argument
# value is passed to the given block, where it can be processed.
@@ -1076,7 +1077,11 @@ class OptionParser
# directly specified pattern(any object possible to match)
if (!(String === o || Symbol === o)) and o.respond_to?(:match)
pattern = notwice(o, pattern, 'pattern')
- conv = pattern.method(:convert).to_proc if pattern.respond_to?(:convert)
+ if pattern.respond_to?(:convert)
+ conv = pattern.method(:convert).to_proc
+ else
+ conv = SPLAT_PROC
+ end
next
end