Re: [dev] Build system: redo

From: Greg Reagle <>
Date: Sun, 03 Jan 2021 14:38:30 -0500

On Sun, Jan 3, 2021, at 14:16, Sergey Matveev wrote:
> "all" target is useful only as a default rule that is run by many
> implementations by default and you have just to type "redo" to build the
> program.

Yes, agreed.

> Everything looks good. But I am just curious: why do you use
> printf 'recompiling %s\n' $2.c >&2
> printf 'relinking\n' >&2
> instead of?:
> echo recompiling $2.c >&2
> echo relinking >&2

I am in the habit of using printf rather than echo because of the drawbacks of echo as explained in For
  echo relinking
specifically, it doesn't matter. For
  echo recompiling $2.c
specifically, if $2 contains any characters that echo might interpret, it might come out wrong.

> In my opinion the later is easier to read and understand.

Yes I agree that the echo is a bit simpler and easier than the printf, but it
has disadvantages.

> And personally I am pretty against that kind of messages.

They are educational messages for me because I am learning.

Thank you for your feedback. I am grateful.
Received on Sun Jan 03 2021 - 20:38:30 CET

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