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From: Kaz Kylheku <336-986-7787@kylheku.com>
Newsgroups: comp.compilers
Subject: Re: [ANN] RE/flex 0.9.18 - a Flex-like lexical analyzer generator for C++
Date: Wed, 29 Mar 2017 06:42:24 +0000 (UTC)
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On 2017-03-29, Hans-Peter Diettrich <DrDiettrich1@netscape.net> wrote:
> Am 28.03.2017 um 19:32 schrieb Kaz Kylheku:
>
>> A nice feature in Flex might be parametrized named regexes:
>>
>> You know how we can define
>>
>>   ALF [A-Z]+
>>
>> and later use
>>
>>   {ALF}
> [...]
>
> This reminds me of CoCo/R, where such constructs and extensions are
> available since decades.

The above snippet refers to a feature of Lex that is already
described in the original 1975 paper "Lex --- A Lexical Analyzer Generator"
by M. E. Lesk and E. Schmidt.

It should probably remind everyone of, oh, #define ALF.

The extension I proposed is on the level of #define MAC(X).