[colm] noob question

[Adrian Thurston]

Hi Peter, the reason is that backslash characters are not interpreted in 
backtick literals. Maybe that could be a warning for colm to emit. 
Detect that you tried.

Another thing: generally it's a bad idea to define tokens that match a 
zero-length string or a non-zero-length string. A zero-length token can 
generate infite sequences of tokens. Consider if you were to put one in 
a list. Colm should warn against this. It's been on the TODO list for 
some time.

Zero-length tokens do have their uses, but you should be certain you 
need it. You don't want it cropping up accidentally.

Adrian

On 2018-01-24 04:40, peter.reijnders at verpeteren.nl wrote:
> hai,
> 
> I am still trying to figure out how to start with colm.
> I realy would like to understand the difference between the following
> colm scripts.
> 
> One can parse the input file, one does not.
> 
> In my opinion, both are 'the same', I like to understand the
> difference, or the best practice.
> Any help is apreciated.
> 
> 
> Peter Reijnders
> 
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