Re: [PATCH] Flush stdout more often

Mattias Engdegård <mattias@virtutech.se> wrote:

> haller@ableton.com (Stefan Haller) writes:
>
> >To recap: For operations that can take a long time to complete, such as
> >status or update, it is nice to flush stdout after every line of status
> >output, to give nicer behaviour when piping output into, say, a pager,
> >or tee.
>
> What about the following trivial script:
>
> [ pty wrapper script snipped ]

This is not an acceptable solution; users shouldn't have to do this. If
you type "make | tee log.txt", you expect to see the ouput while it
happens, right? If this works well for make, I don't see why some
people insist it shouldn't also for svn.

Besides, it is probably not very portable. I'm not sure if it works in
cygwin, for example (I haven't tried).

> (If you insist in changing the client, why not add a global option
> which just sets the stdout buffering to line mode?)

There shouldn't be an option for something like this. It should "just
work", without the user having to do anything.

And you don't really want line mode anyway. You want flushing after
chunks of information; in many cases this is after every line, but for
log it is after each entry, and for diff it is after each file.

I really think that judicious flushing in selected places is the right
thing to do to solve this.

-- 
Stefan Haller
Berlin, Germany
http://home.snafu.de/stk/
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