[9fans] com: comments toggle in acme

[9fans] com: comments toggle in acme

[Jacek Masiulaniec]

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My latest addition to the acme column tag, alongside |a-, |a+, and |fmt.

#!/usr/bin/env rc

fn f {
n=$1
if(! cat $f | cut -c1-$n | 9 grep -v '^[  ]+$' >/dev/null){
x=`{f `{expr $n + 1}}
echo '.'$"x
}
}

f=/tmp/com.$pid
cat >$f

switch($%){
case *.go *.c
c='//'
case *
c='#'
}

# Remove comment?
if(cat $f | 9 grep '^[  ]*'$c' ' >/dev/null){
cat $f | 9 sed 's|'$c' ||'
rm $f
exit
}

# Add comment.
s=`{f 1}
if(~ $#s 0)
cat $f | 9 sed 's|^|'$c' |'
if not
cat $f | 9 sed 's|^('$"s')|\1'$c' |'

rm $f

I name this |com. The original motivation was to avoid manual keying in of
the comment characters, which I found myself doing quite frequently for
short line ranges.

It also works well with Go's "imported and not used" error. Once plumbed to
the offending import line, it only takes one click to temporarily disable
an import.

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Re: [9fans] com: comments toggle in acme

[6o205zd02]

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Nice.  Thanks.

BTW, I know what fmt is, but what do a- and a+ do?

On 11/13/2012 3:13 PM, Jacek Masiulaniec jacekm-at-dobremiasto.net
|9fans| wrote:
> My latest addition to the acme column tag, alongside |a-, |a+, and |fmt.
>
> #!/usr/bin/env rc
>
> fn f {
> n=$1
> if(! cat $f | cut -c1-$n | 9 grep -v '^[ ]+$' >/dev/null){
> x=`{f `{expr $n + 1}}
> echo '.'$"x
> }
> }
>
> f=/tmp/com.$pid
> cat >$f
>
> switch($%){
> case *.go *.c
> c='//'
> case *
> c='#'
> }
>
> # Remove comment?
> if(cat $f | 9 grep '^[ ]*'$c' ' >/dev/null){
> cat $f | 9 sed 's|'$c' ||'
> rm $f
> exit
> }
>
> # Add comment.
> s=`{f 1}
> if(~ $#s 0)
> cat $f | 9 sed 's|^|'$c' |'
> if not
> cat $f | 9 sed 's|^('$"s')|\1'$c' |'
>
> rm $f
>
> I name this |com. The original motivation was to avoid manual keying
> in of the comment characters, which I found myself doing quite
> frequently for short line ranges.
>
> It also works well with Go's "imported and not used" error. Once
> plumbed to the offending import line, it only takes one click to
> temporarily disable an import.


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Re: [9fans] com: comments toggle in acme

[Martin Kühl]

On Fri, Nov 16, 2012 at 5:16 AM,  <6o205zd02@sneakemail.com> wrote:
> BTW, I know what fmt is, but what do a- and a+ do?

indentation and un-indentation.
http://9fans.net/archive/2008/09/71

Re: [9fans] com: comments toggle in acme

[Mark van Atten]

Thanks, indeed!

I added two lines so it can be used with Latex files too:

case *.tex
c='%'

Mark.