Re: Allow digits in identifiers (issue 6493072)

[dak]

On 2012/09/03 18:08:23, Keith wrote:
> The version "digits, but not at the end" lets us read
>    vn2_meas345ff = \relative c' cis1
> by depending on the ability of the scanner to back up.

> The input
>    ceses128_3ap
> is a single word, but upon finding the \ in
>    ceses128_3\p
> the scanner has to back up to split as
>    ceses 128 _ 3 \p

flex documentation is pretty clear about backing up being very
expensive.  I don't remember whether it was only expensive when it
happens, or whether the expense was more or less a fixed cost.  However,
things like a4 are not actually rare in music input.

http://codereview.appspot.com/6493072/