On Sep 02, 2024 / 15:53, Martin Wilck wrote:

On Thu, 2024-08-29 at 07:36 +0000, Shinichiro Kawasaki wrote:

quoted

Shellcheck reports a warning here:

  tests/nvme/053:47:9: warning: Prefer mapfile or read -a to split
command output (or quote to avoid splitting). [SC2207]

It is a bit lengthy, but let's replace the line above with this:

        while read -r line ; do ctrls+=("$line"); done <
<(_nvme_get_ctrl_list)

Thanks for the review. If you don't mind, I'll just use "mapfile -t",
as suggested by shellcheck.

The reason I did not suggest the "mapfile -t" solution was that SC2207
recommends it for bash versions 4.4+ [1]. On the other hand, blktests README.md
requires bash version >= 4.2. So I assume that some blktests users use bash
version 4.2 or 4.3. I took a glance in the bash change history [2], and there
are some mpafile related bug fixes between bash version v4.2 an v4.4. So I think
it's the better to not use "mpafile -t" in blktests.

Do you have any specific reason to use "mapfile -t"?

[1] https://www.shellcheck.net/wiki/SC2207
[2] https://git.savannah.gnu.org/cgit/bash.git/tree/CHANGES

Martin