[Info-vax] OpenVMS - DCL - Data entry filtering

[Stephen Hoffman]

On 2015-03-25 10:47:05 +0000, Paul Sture said:

> On 2015-03-25, IanD <iloveopenvms at gmail.com> wrote:
>> 
>> I am wanting to write a small bit of DCL that will filter a users
>> input to ensure that the following characters are voided in any input
>> ...
> $ ! FILTER.COM
> ...

FWIW, I'd generally reverse that check, and would allow only a list of 
known-valid characters to pass the filter, as that tends to be more 
resistant to shenanigans.  Anything not on that list gets rejected, so 
— for instance — DEC MCS characters and control characters would be 
filtered out.

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