On Fri, Jun 09, 2017 at 01:52:44AM +0700, Peter & Kelly Passchier wrote:
> On 09/06/2560 00:42, Greg Wooledge wrote:
> > foo=$(cat "$file"; printf x) foo=${foo%x}
>
> The workaround I came up with is:
> mapfile <"$file"; IFS= foo=${MAPFILE[@]}
>
> This seems to be faster, but it probably has other disadvantages...
Well, it leaves IFS changed, because you didn't revert or unset it,
or run the entire thing in a function with local IFS. Also, I'd use
"${MAPFILE[*]}" to reinforce that you are joining an array into a string,
rather than expanding the array as a list. Semantically, x=$@ is pretty
"huh??" to me.
It also leaves the array in memory, and requires bash 4. Those may not
be significant.
