m4_define([AC_HELP_STRING],
[m4_pushdef([AC_Prefix], m4_default([$3], [ ]))dnl
m4_pushdef([AC_Prefix_Format],
- [ %-]m4_eval(m4_len(AC_Prefix) - 3)[s ])dnl [ %-23s ]
+ [ %-]m4_eval(m4_len(AC_Prefix) - 3)[s ])dnl [ %-23s ]
m4_text_wrap([$2], AC_Prefix, m4_format(AC_Prefix_Format, [$1]))dnl
m4_popdef([AC_Prefix_Format])dnl
m4_popdef([AC_Prefix])dnl