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Bug #20700
closed`warn_cr_in_shebang()` doesn't fire if there's no `\n`
Status:
Feedback
Assignee:
-
Target version:
-
ruby -v:
ruby 3.3.4 (2024-07-09 revision be1089c8ec) [arm64-darwin23]
Description
The warn_cr_in_shebang()
function looks for \r\n
together, but the \r
should emit a warning, regardless if there's also a \n
or not.
#!/usr/bin/ruby
require "tempfile"
require "open3"
def run_rb(ruby_src)
puts "===== Output of #{ruby_src.inspect}:"
Tempfile.create("script.rb") do |f|
f.print(ruby_src)
f.close
stdout_and_stderr_str, status = Open3.capture2e("/opt/rubies/3.3.4/bin/ruby", f.path)
raise unless status.success?
puts stdout_and_stderr_str
end
end
run_rb("#!ruby") # ✅ no warning
run_rb("#!ruby\r") # ❌ no warning!
run_rb("#!ruby\r\n") # ✅ warns
run_rb("#!ruby -Eutf-8\r\n123") # ✅ warns
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