I think we are talking about several things, here.
One of them is about reformatting the whole file and another is
reformatting locally when the programmer is approaching a line length
of 80.
I program with full trust in the Dr's ability to auto-indent and check-
syntax, so I do both constantly. That way, I am never surprised by a
big change in the file. Nearly the same result could almost be
achieved by live auto formatting of only the definition undergoing
editting. ('almost', because there are ghosts to haunt anyone who
attempts such an implementation). I would have attempted this awhile
ago if I knew how to get started.
The line-length issue is one that could partly be handled by allowing
the programmer to size the editting window to exactly the correct
length, then manually edit to eliminate wrappings. However, I wouldn't
mind if the Dr took the scapel and tried to fix it for me.
RAC
On Jul 31, 2010, at 1:42 PM, Jos Koot <jos.k...@telefonica.net> wrote:
I am not a student, but try to think and do like student now.
I would be very frustrated when all the time I run a program, my
code would
be reindented and get quite another appearance. WHAT HAPPENS HERE,
would be
my first thought. Reindenting a file before saving it would give me
the same
surprise when opening it again. Wow, this apparently is not the
program I
have entered. Where is my program???
Nevertheless I agree with Matthias that indentation is a very
helpfull tool.
But doing that without explicit request seems confusing to me (at
the least)
Just a strong advice to type control-I from time to time would not be
adaquate? Furthermore, typing a program with the standard indentation
settings already gives indentation while typing. Wow, that's not the
indentation I expected after my last line-break. Ho, I see, a
parenthesis
too much or too less in the previous line. No problem, add or remove
it
followed by control-I.
BTW, for myself I prefer indentation by exactly as many spaces as
there are
unsatisfied open parentheses (for as far as possible, for shotcuts
like '''
and '#'' and '#,@' may inhibit my preferred indentation.)
Jos
-----Original Message-----
From: users-boun...@racket-lang.org
[mailto:users-boun...@racket-lang.org] On Behalf Of Matthias
Felleisen
Sent: 31 July 2010 21:14
To: Robby Findler
Cc: Eli Barzilay; racket List
Subject: Re: [racket] syntax, differently
The file wouldn't move all the time. It would move on RUN and
on SAVE.
Most experienced programmers wouldn't see any movement whatsoever.
Students would see movement for a short time. Then they'd
follow the flow.
-- Matthias
On Jul 31, 2010, at 2:25 PM, Robby Findler wrote:
Thinking as someone who would be implementing these changes, I can
easily see a whole slew of bug reports coming in of the
form "When I
save my file DrRacket moves all the lines around. What's
going on?!".
So, while I agree that there is something to be done here vis a vis
indentation help in the PDE, I don't think we quite are at
the "try to
implement it and play with it" stage yet.
Robby
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