Re: Maximum length input line

On Sun, 20 Aug 2000, Peter Scott wrote:
> Well you guys are way ahead of me on your line discipline modes, so I 
> didn't want to hazard a syntax; just wanted to make my desires known.

I wouldn't say that we are (well, at least me) way ahead.  I'm just
throwing ideas out nyself, except that I was hazarding a syntax. 
Someone else was in the process of RFCing line disciplines, so I pretty
much just backed off.  Particularly because what I know is limited
to what I've read, so I'm mainly just wagging this as I go along.

> >As in reading the first n columns?
> >
> >:col=1024
> >
> >Read the first 1024 columns of each line, and if the line happens to
> >be shorter than 1024, so be it?
> 
> That's what I was looking for, but the other choice I was talking about was 
> whether the excess is thrown away or comes in on the next read.  So there 
> are these 3 scenarios when a line longer than the user's desired maximum 
> arrives:
> 
> # No options changed, i.e., current behavior
> $line = <FOO>;  # $line gets whatever the input was

Okay, standard.

> 
> # Maximum input length set to $MAXLEN
> # Excess is thrown away
> $line = <FOO>;  # $length($line) == $MAXLEN
> $line = <FOO>;  # $line is filled from after last line terminator

This would be akin to my :col.  (Lay all the lines out, and hack off
all the columns past $MAXLEN.)

> 
> # Maximum input length set to $MAXLEN
> # Excess left in input buffer
> $line = <FOO>;  # $length($line) == $MAXLEN
> $line = <FOO>;  # $line filled starting from next character after previous 
> $line

This would be akin to my :block. (When put on top of, er, under, er,
whichever way, the :text discipline to stop at new lines.)


-- 
Bryan C. Warnock
([email protected])