riot-web/scripts/normalize-version.sh

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#!/bin/bash
# If $1 looks like v1.2.3 or v1.2.3-foo, strip the leading v, then print it to stdout
if [[ $1 =~ ^v[[:digit:]]+\.[[:digit:]]+\.[[:digit:]]+(-.+)?$ ]]; then
echo ${1:1}
else
echo $1
fi