What is the idiomatic way to append a string to a file?

[Vladimir Nikishkin]

It seems that r7rs is missing a standard append procedure (or maybe I
have not found it), and I also did not find a file-append function in
the (chibi ...) namespace.

What is the standard way to append something to a file?
At the moment I am using

(shell (echo ,string) (>> ,file))

which looks a bit ridiculous

is there a better way?

Also, is there a better way to send a variable to a posix command in
(chibi shell)?

I tried something like (shell (cat) (<<< "test")), but this does not work.


--
Yours sincerely, Vladimir Nikishkin
(Sent from GMail web interface.)

[Alex Shinn]

(chibi log) defines but does not export:

(define (open-output-file/append path)
        (let ((fd (open path
                        (+ open/create open/write open/append open/non-block))))
          (open-output-file-descriptor fd)))

I should probably refactor that as a utility exported from (chibi filesystem),

which provides those low-level file-descriptor operators.

In the original plan for R7RS large this would have been part of the

Green (non-portable) docket, although this functionality seems missing

from the initial sketch https://small.r7rs.org/wiki/FilesAdvancedCowan/.

I'm not sure where this falls in the current R7RS large plans but it

should definitely be included.

-- 

Alex

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