Rewrite examples in `printf` wherever possible?

[gsklee]

@anordal In echo → printf, the guide is trying to make a case that printf should be preferred over echo; however in a lot of other places within the guide (eg. Corollary: Use while loops to iterate strings and command output), echo is being used extensively. Do we want to consolidate the guide and rewrite examples in printf wherever possible?

[gsklee]

@anordal Any explanations?

[anordal]

It should always be possible to replace echo with printf. I only rewrote the guide's examples in printf where necessary according to itself – I admit it was inconsistent. I also tried to de-emphasize the hysteria and focus on the why part (5f425ee47).

Are you wondering why I didn't change the rest?

In the cases where it doesn't matter, I have two concerns:

• The verbosest alternative is usually hard to defend. One of my heroes, Jussi Pakkanen argues that it is human nature to always pick the simple solution even when it is the wrong one.
• For example purposes, verbosity is distraction too.

[gsklee]

Thanks for the detailed explanation 👍