Re: [9fans] Plan9 development

[roger peppe <rogpeppe@gmail.com>]

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.  one
> 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=x.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.