Re: [9fans] acme/sam internal/external command combination?

[Russ Cox <russcox@gmail.com>]

Doesn't answer the general question very nicely but:

Edit x/[^a]/d
Edit $=

or

!>/tmp/a
Edit x/a/ |cat >>/tmp/a
!wc /tmp/a



On 6/13/05, Axel Belinfante <Axel.Belinfante@cs.utwente.nl> wrote:
> [cross-posting to sam-fans where this is more appropriate,
>  although that has been silent for quite a while]
> 
> I can count the number of ``a'' characters in
> ``dot'' (current selection) in acme using
> 
>         Edit x/a/p
> 
> which prints all ``a'' from ``dot'' in window +Errors
> and the selecting the aaaa string in +Errors and
> running >wc on it.
> 
>         Edit x/a/ > wc
> 
> runs wc for each match of ``a'' which is not what
> we want (we want to run wc only once, on all matched ``a'').
> 
> Is there a (more) direct way to do this, or to access the
> characters printed by the ``p'' command of above ``Edit'',
> e.g. something to the effect of
> 
>         (Edit x/a/p)| wc
> 
> (and if so, what would be the sam equivalent?)
> 
> 
> I could imagine a command sequence that first
> ``destructs'' dot to contain the aaaaa string
> and then runs >wc on that, but after that the
> original contents should be restored, so that
> is not a very good solution.
> 
> 
> I think the more general question is: to what
> extent is it possible (or useful) to mix internal
> sam/acme commands (in particular those for
> selecting/matching/looping) with external ones like wc,
> or is the solution to not try to use acme/sam
> commands for ``preprocessing'' (selecting),
> but instead use something external,
> like sed or awk, on the whole selection?
> 
> 
> Just trying to learn,
> Axel.
>