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#: * `command` <cmd>:
#: Display the path to the file which is used when invoking `brew` <cmd>.
module Homebrew
def command
abort "This command requires a command argument" if ARGV.empty?
cmd = ARGV.first
cmd = HOMEBREW_INTERNAL_COMMAND_ALIASES.fetch(cmd, cmd)
if (path = internal_command_path cmd)
puts path
elsif (path = which("brew-#{cmd}") || which("brew-#{cmd}.rb"))
puts path
else
odie "Unknown command: #{cmd}"
end
end
private
def internal_command_path(cmd)
extensions = %w[rb sh]
paths = extensions.map { |ext| HOMEBREW_LIBRARY_PATH/"cmd/#{cmd}.#{ext}" }
paths += extensions.map { |ext| HOMEBREW_LIBRARY_PATH/"dev-cmd/#{cmd}.#{ext}" }
paths.find { |p| p.file? }
end
end
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