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Date: Mon,  8 Nov 2010 11:04:59 +0000
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From: roger peppe <rogpeppe@gmail.com>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
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Subject: Re: [9fans] Plan9 development
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On 5 November 2010 19:06, erik quanstrom <quanstro@labs.coraid.com> wrote:
>> > ('&', '&&', '||', if, '|', 'and '`{}') with something general
>> > enough to replace mk, you'd be on to something.
>>
>> i did a mash-inspired version of mk as an inferno shell module once.
>> it required no new syntax (although it could be confused by
>> files named ":"...)
>
> what you did was very cool, but iirc this was in addition
> to, not replacing the standard && || ... bits. =C2=A0one
> could build pipelines and specify command order in one
> unified way, no?

well, all it knows about are commands, fds and environment
variables. if, && and || are all defined externally.

a "mkfile" using the sh mk module looked something like this:

#!/dis/sh
load mk
metarule %.dis : %.b {
    limbo -gw $stem.b
}
TARGETS=3Dx.dis y.dis z.dis
rule -V all : $TARGETS {
    echo done
}
mk

it'd be trivial to add a bit of syntactic sugar
a la mash, to make the syntax more mk-like,
but it seemed better just to port mk itself.