Re: [9fans] acme g/$/ funny

[Pietro Gagliardi <pietro10@mac.com>]

On Jul 17, 2008, at 6:03 AM, roger peppe wrote:
> Edit ,x/.*/g/$/a/foo/
>
> shouldn't this append "foo" after every line?
>
> sam gives slightly different behaviour here
> (but still questionable) - it appends "foo" after
> every empty line.
>
> is this actually a bug, or have i misunderstood the
> way that '$' is meant to work?
>
> it does seem strange that in the following edit
> command, the guard never matches anything.
>
> Edit ,x/foo$/g/foo$/d
>

You misunderstood how Pike regexps work, and it's a bug in sam. The
pattern /./ matches everything EXCEPT a newline, which would be
matched with $. The guard, then, should never work, as the following
proves:

,x/.*/g/$/p

As expected, no output (for sam too). So acme is acting correctly. Why
sam does something, then, with a// is beyond me (a long undiscovered
bug, perhaps?).

The following worked for me for both sam and acme:

,x/$/a/foo/

On Jul 17, 2008, at 8:44 AM, Charles Forsyth wrote:
> Edit ,x/.*\n/g/\n/a/foo
That appends foo at the beginning of the next line. Try i/foo/.