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divert(`-1')
# forloop_arg(from, to, macro) - invoke MACRO(value) for
# each value between FROM and TO, without define overhead
define(`forloop_arg', `ifelse(eval(`($1) <= ($2)'), `1',
`_forloop(`$1', eval(`$2'), `$3(', `)')')')
# forloop(var, from, to, stmt) - refactored to share code
define(`forloop', `ifelse(eval(`($2) <= ($3)'), `1',
`pushdef(`$1')_forloop(eval(`$2'), eval(`$3'),
`define(`$1',', `)$4')popdef(`$1')')')
define(`_forloop',
`$3`$1'$4`'ifelse(`$1', `$2', `',
`$0(incr(`$1'), `$2', `$3', `$4')')')
divert`'dnl
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