for-each-ref: handle multiline subjects like --pretty
Generally the format of a git tag or commit message is: subject body body body body body body However, we occasionally see multiline subjects like: subject with multiple lines body body body body body body The rest of git treats these multiline subjects as something to be concatenated and shown as a single line (e.g., "git log --pretty=format:%s" will do so since f53bd743). For consistency, for-each-ref should do the same with its "%(subject)". Signed-off-by: NJeff King <peff@peff.net> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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