Traditionally SREs have had the following aliases

allowing the user to choose between brevity and

self-description:

From SCSH:

| or

& and

: seq

From IrRegex (in this case introducing a new short form):

$ submatch

=> submatch-named

For consistency Michael Montague suggested all

SREs have a short and long form. John Cowan

suggests the following names:

? optional

* zero-or-more

+ one-or-more

>= at-least

= exactly

** repeated

?? non-greedy-optional

*? non-greedy-zero-or-more

**? non-greedy-repeated

For the cset-sres we'd also need:

/ char-range (or cset-range?)

- difference (or diff?)

~ complement (or not?)

I would suggest not introducing new short forms

of existing long names. Comments welcome, but

if there are no objections I'll go with this.

--

Alex