* [9fans] rcmain
@ 2005-12-09 21:02 erik quanstrom
2005-12-09 21:34 ` Russ Cox
0 siblings, 1 reply; 3+ messages in thread
From: erik quanstrom @ 2005-12-09 21:02 UTC (permalink / raw)
To: 9fans
rcmain has an interesting construct. it goes something like
if (~ $#'fn#cd' 1)
cmd;
i was a little curious about this so i tried this
fn fu {echo bar}
if (~ $#'fn#fu' 1)
echo yes;
if not
echo no;
which outputs "no". however this
fn fu {echo bar}
rc
if (~ $#'fn#fu' 1)
echo yes;
if not
echo no;
outputs "yes".
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [9fans] rcmain
2005-12-09 21:02 [9fans] rcmain erik quanstrom
@ 2005-12-09 21:34 ` Russ Cox
2005-12-09 21:46 ` erik quanstrom
0 siblings, 1 reply; 3+ messages in thread
From: Russ Cox @ 2005-12-09 21:34 UTC (permalink / raw)
To: erik quanstrom, Fans of the OS Plan 9 from Bell Labs
> rcmain has an interesting construct. it goes something like
What rcmain are you looking at? I can't find $#'fn#cd' anywhere.
While we're on the topic of surprising constructs, I discovered
this about troff earlier today:
.ds A0 "This is string A0
.ds A1 "This is string A1
.ds A2 "This is string A2
.de A
.tm Look: \\*(A\\$1
..
.A 1
Russ
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [9fans] rcmain
2005-12-09 21:34 ` Russ Cox
@ 2005-12-09 21:46 ` erik quanstrom
0 siblings, 0 replies; 3+ messages in thread
From: erik quanstrom @ 2005-12-09 21:46 UTC (permalink / raw)
To: 9fans, Russ Cox
oh boy, that's from an /old/ p9p. i think it's an rcmain that came with the p9p
awhile ago, but i may have written it. i don't remember writing something
like that, but hey, i can't remember what i did last week.
- erik
Russ Cox <rsc@swtch.com> writes
|
| > rcmain has an interesting construct. it goes something like
|
| What rcmain are you looking at? I can't find $#'fn#cd' anywhere.
^ permalink raw reply [flat|nested] 3+ messages in thread
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2005-12-09 21:02 [9fans] rcmain erik quanstrom
2005-12-09 21:34 ` Russ Cox
2005-12-09 21:46 ` erik quanstrom
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