m4_define([lemon_hg_revision], [m4_normalize(esyscmd([hg tip |grep ^changeset |cut -d ':' -f 3]))])

 m4_define([lemon_hg_revision], [m4_normalize(esyscmd([hg tip --template '{node|short}']))])

 m4_define([lemon_version], [lemon_version_major().lemon_version_minor()ifelse(lemon_version_micro(), [], [], [.lemon_version_micro()])ifelse(lemon_version_nano(), [], [], [.lemon_version_nano()])ifelse(lemon_version_tag(), [], [], lemon_version_tag(), [hg], [[_]lemon_version_tag()[]lemon_hg_revision()], [[_]lemon_version_tag()])])

 m4_define([lemon_version], [lemon_version_major().lemon_version_minor()ifelse(lemon_version_micro(), [], [], [.lemon_version_micro()])ifelse(lemon_version_nano(), [], [], [.lemon_version_nano()])ifelse(lemon_version_tag(), [], [], lemon_version_tag(), [hg], [[_]lemon_version_tag()[_]lemon_hg_revision()], [[_]lemon_version_tag()])])