* Re: today's rc programming challenge
@ 1992-04-17 13:23 rsalz
0 siblings, 0 replies; 4+ messages in thread
From: rsalz @ 1992-04-17 13:23 UTC (permalink / raw)
To: chupchup, cks; +Cc: rc
I tried your function and got my trailing ` missing.
What's wrong with builtin echo -n ?
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: today's rc programming challenge
@ 1992-04-17 12:34 Arnold D. Robbins
0 siblings, 0 replies; 4+ messages in thread
From: Arnold D. Robbins @ 1992-04-17 12:34 UTC (permalink / raw)
To: Chris Siebenmann; +Cc: rc
> Given: a string in a variable.
> Wanted: the same string but without the newline on the end
>
> Challenge: how, in the (possible) presence of any character except binary
> 0 in the string, do to this? Bonus points awarded for the shortest solution,
> the most efficient solution, and one that can be stuck in a function.
x='foo
'
x=`{tr -d '
' <<< $x}
fn stripnl { ret=() {
ret=`{tr -d '
' <<< $1
return ret
}}
Arnold
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: today's rc programming challenge
1992-04-16 22:11 Chris Siebenmann
@ 1992-04-17 11:07 ` Robert Earl
0 siblings, 0 replies; 4+ messages in thread
From: Robert Earl @ 1992-04-17 11:07 UTC (permalink / raw)
To: Chris Siebenmann; +Cc: rc
fn chop {
l=() {
for (f in ``$nl{whatis $1}) {
~ $#l 0 || echo -n $l
~ $f '''' && {echo ''''; return}
~ $#l 0 || echo
l=$f
}
}
}
you call it with a variable name rather than the value; and it prints
a variable assignment a la `whatis' on stdout, so to use it:
; foo='testing
chop.
'
; eval ``(){chop foo}
and foo is now chopped. i know the calling syntax is obscure, but
using whatis was convenient - it knows how to quote, and in the
presence of tabs and spaces, echo could get things wrong.
OBChallenge: make this work with more than one argument. i had to use
"return" to cut out of the loop (which is why it HAS to be in a
function).
^ permalink raw reply [flat|nested] 4+ messages in thread
* today's rc programming challenge
@ 1992-04-16 22:11 Chris Siebenmann
1992-04-17 11:07 ` Robert Earl
0 siblings, 1 reply; 4+ messages in thread
From: Chris Siebenmann @ 1992-04-16 22:11 UTC (permalink / raw)
To: rc
Given: a string in a variable.
Wanted: the same string but without the newline on the end
Challenge: how, in the (possible) presence of any character except binary
0 in the string, do to this? Bonus points awarded for the shortest solution,
the most efficient solution, and one that can be stuck in a function.
- cks
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~1992-04-17 14:04 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
1992-04-17 13:23 today's rc programming challenge rsalz
-- strict thread matches above, loose matches on Subject: below --
1992-04-17 12:34 Arnold D. Robbins
1992-04-16 22:11 Chris Siebenmann
1992-04-17 11:07 ` Robert Earl
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).