Add new "delimiter" argument

[stevenweaver]

Because regex is difficult to sanitize when used as an argument in web applications, we should add a new argument, --delimiter, to be used instead of --parser.

[spond]

Dear @stevenweaver,

The current implementation relies on the ability to extract subexpressions. It may be difficult to replicate with delimiters only. Is there a specific use-case you had in mind? Are you worried about malicious argument crafting?

Please elaborate.

Best, Sergei

[stevenweaver]

Dear @spond,

I am worried about malicious argument crafting. Specifically, within the context of a web application. Currently, the galaxy tool will omit this argument.

Best, Steven

[spond]

Dear @stevenweaver,

That's fine. We can implement a limited subset of functionality via a new "delimiter" argument, specifically for web applications, and keep the regex for command line use.

Best, Sergei