On March 7, 2015 3:04:52 PM GMT+01:00, "Robert P. J. Day"
<[email protected]> wrote:
>
> based on a recent post to this(?) list, i was curious about the
>following loop construct in u-boot.inc:
>
> for config in ${UBOOT_MACHINE}; do
> for type in in ${UBOOT_CONFIG}; do
> if [ "${type}"x = "in"x ]
> then
> continue
> fi
>
> the words "in in" above don't appear to be a typo, as the next
>condition explicitly checks for the value "in" and skips it. what's
>the rationale for that? i used "git blame" to examine the commit that
for may barf on empty iteration input.
One usually uses for i in ${foo} '';
and skips i with zero length. Any other is obviously fine, too though so
nothing wrong or odd here.
HTH,
>introduced that, but it says nothing about that curiosity.
>
>rday
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