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由 Junio C Hamano 提交于
d5cc2de9 (ident.c: Trim hint printed when gecos is empty., 2006-11-28) reworded the message used as printf() format and dropped "%s" from it; these two variables that hold the names of GIT_{AUTHOR,COMMITTER}_NAME environment variables haven't been used since then. Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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