diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/shellwords.rb | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/lib/shellwords.rb b/lib/shellwords.rb index 550c2693de..2aaa30c23c 100644 --- a/lib/shellwords.rb +++ b/lib/shellwords.rb @@ -57,7 +57,8 @@ module Shellwords end # Escapes a string so that it can be safely used in a Bourne shell - # command line. + # command line. +str+ can be a non-string object that responds to + # +to_s+. # # Note that a resulted string should be used unquoted and is not # intended for use in double quotes nor in single quotes. @@ -77,6 +78,8 @@ module Shellwords # Multibyte characters are treated as multibyte characters, not # bytes. def shellescape(str) + str = str.to_s + # An empty argument will be skipped, so return empty quotes. return "''" if str.empty? @@ -101,7 +104,9 @@ module Shellwords end # Builds a command line string from an argument list +array+ joining - # all elements escaped for Bourne shell and separated by a space. + # all elements escaped for Bourne shell into a single string with + # fields separated by a space, where each element is stringified + # using +to_s+. # # open('|' + Shellwords.join(['grep', pattern, *files])) { |pipe| # # ... @@ -113,6 +118,11 @@ module Shellwords # # ... # } # + # It is allowed to mix non-string objects in the elements as allowed + # in Array#join. + # + # output = `#{['ps', '-p', $$].shelljoin}` + # def shelljoin(array) array.map { |arg| shellescape(arg) }.join(' ') end |