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matrix-spec/scripts/check-newsfragments

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#!/usr/bin/env bash
#
# A script which checks that an appropriate news file has been added on this
# branch.
pr="$PULL_REQUEST_NUMBER"
echo -e "+++ \033[32mChecking newsfragments for PR #$pr\033[m"
failed=0
matched=0
# assume that anything in the changelogs directory which starts with a number
# is intended as a newsfile.
#
# (we use the < <(...) syntax rather than a regular pipe to avoid spawning a
# subshell for the while loop, which would mean that changes to shell variables
# are not propagated)
#
while read f; do
basename=$(basename $f)
dirname=$(dirname $f)
# check that there is nothing that looks like a newsfile outside one of the
# expected directories.
if [[ "$dirname" != changelogs/*/newsfragments ]]; then
echo -e "\e[31mERROR: newsfragment $f appears to be in the wrong directory: should be in changelogs/*/newsfragments\e[39m" >&2
failed=1
else
# see if this newsfile corresponds to the right PR
[[ -n "$pr" && "$basename" == "$pr".* ]] && matched=1
fi
done < <(find changelogs -regex '.*/[0-9]+\.[^/]+$')
if [[ -n "$pr" && "$matched" -eq 0 ]]; then
echo -e "\e[31mERROR: Did not find a news fragment with the right number: expected changelogs/*/newsfragments/$pr.*\e[39m" >&2
failed=1
fi
exit $failed