[ESS] paragraph filling in R scripts

[Dr. Alun Pope]

Hi Tyler,

Thanks for looking at this.  I have not encountered the problem you
mention, but I have come across the following problem which is related.


Suppose I have a perfectly good expression such as this 

very.long.meaningful.object.name[some.indexing.also.long,] <-
some.longish.expressions

(the whole thing on one line, although your email may show it
differently)

When I tidy the code by end-delete-return on that line, the line appears
as:

very.long.meaningful.object.name[some.indexing.also.long,]
<- some.longish.expressions

(in case your email won't show this correctly - the second line begins
with <- )

Unfortunately this changes a syntactically expression into two
expressions, one syntactically correct and one not, since an expression
can't start with an assignment.   This causes source() to complain.

My question is : does your solution or something similar fix this
problem too?

I am sorry for not giving more comprehensive details, I was going to do
an example etc and give version numbers etc, but since you raised this,
I thought I might as well ask quickly, in case you already have a
solution.

Many thanks.

Alun


-----Original Message-----
From: ess-help-bounces at stat.math.ethz.ch
[mailto:ess-help-bounces at stat.math.ethz.ch] On Behalf Of tyler
Sent: Saturday, 13 June 2009 12:19 PM
To: ess-help at stat.math.ethz.ch
Subject: [ESS] paragraph filling in R scripts

Hi again,

Another bug from way back, this one reported for 5.3.6:

https://stat.ethz.ch/pipermail/ess-bugs/2007q4/000468.html

I fixed this with the following lines from my .emacs, but patching
essl-s.el would be cleaner. 

(defun my-ess-mode-hook ()
  (setq paragraph-start
        (concat paragraph-start
                "\\|.*<-\\|\\s +\\(while\\|if\\|else\\|for\\)")))
(add-hook 'ess-mode-hook 'my-ess-mode-hook)

I haven't looked at this in ages, since my hook fixed the problem for
me. There may be better solutions, but this works fine for me.

Cheers,

Tyler

-- 
What is wanted is not the will to believe, but the will to find out,
which is the exact opposite.           --Bertrand Russell

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