Escaped Double Quote Side Effect in Windows Command Prompt?

The double quote in \" is considered to match the initial double quote, ending the quoted parameter. To include a double quote in a quoted parameter use two double quotes.

The double quote in \" is considered to match the initial double quote, ending the quoted parameter. To include a double quote in a quoted parameter use two double quotes: perl check-params. Pl "a"" b|" should produce the result you are expecting, depending on how perl.

Exe parses the command-line parameters (I've tested using command scripts as I don't have Perl installed). You'll need to change your script so that "" instead of \" is treated as a double quote. Additional: this command line echo "a \"b|c" results in an error message starting c" is not recognized.

This is not a bug. A backslash is not an escape character, so the command line contains one quoted string ("a \") followed by a pipe (|) which makes the rest (c") an additional command, which the output from the echo command is piped into. If you instead say echo "a ""b|c" then there is just one quoted string ("a ""b|c") and it will work as expected.

Unfortunately, I can now confirm that ActivePerl's command-line parsing causes perl check-params. Pl "a"" b|" to be split into two parameters. You may need to fetch the entire command line (if there is a way to do that in Perl) and parse it yourself.

Additional: perl check-params. Pl ^"a\^" b^|c^" produces the desired result. This works by escaping all the special characters, including the quote marks.

The ^" is quite helpful, and I have added this to my numerous workarounds. There appear to be 2 issues here, one is how the Windows command interpreter works, and the other is how Perl parses a command line. – user995887 Nov 1 at 15:28.

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