# File lib/vmail/string_ext.rb, line 10 def self.shellescape(str) # An empty argument will be skipped, so return empty quotes. return "''" if str.empty? str = str.dup # Process as a single byte sequence because not all shell # implementations are multibyte aware. str.gsub!(/([^A-Za-z0-9_\-.,:\/@\n])/, "\\\\\\1") # A LF cannot be escaped with a backslash because a backslash + LF # combo is regarded as line continuation and simply ignored. str.gsub!(/\n/, "'\n'") return str end
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