Bastian Bittorf 800f02ba38 dnsapi/dns_lexicon.sh: shellcheck: fix 4 occurences of SC2021: ...

"Don't use [] around ranges in tr, it replaces literal square brackets."

this introduces another warning:
"Use '[:lower:]' to support accents and foreign alphabets."

This is more a style thingy because we really want to only catch A-Z.
work around this by using a shellcheck-directive and a comment
that the [:lower:] will not work with e.g. busybox-ash.

if we later really want to use [:lower:], we should use 'sed' for that.

2017-01-09 12:21:32 +01:00

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