Re: repetition

I think you are looking at this as if it were a regular expression; I would think of it more like an optional parameter to a function, cf pseudocode:

```
string-join(a*, "#")
```


so "a#" wouldn't match because the "#" isn't appended rather than inserted as a separator.

What syntax would make more sense?

_________________
Tomos Hillman
eXpertML Ltd
+44 7793 242058
On 16 Dec 2021, 11:03 +0000, Dave Pawson <dave.pawson@gmail.com>, wrote:
> 14 December spec
>
> "A factor repeated zero or more times is followed by an asterisk,
> optionally followed by a separator, e.g. abc* and abc*",". For
> instance "a"*"#" would match the empty string, a a#a a#a#a etc."
>
> I'm confused. To my thinking "a"*"#" would match any number of 'a'
> characters followed by one hash character.
>
> To me, a#a a#a#a appears wrong. Is zero or more 'left associative' if
> that's the right expression? How does the a# repetition match?
>
> Same applies to the zero or one example.
>
> regards
>
>
> --
> Dave Pawson
> XSLT XSL-FO FAQ.
> Docbook FAQ.
>