Re: AS_EXIT, optimization

[Akim Demaille]

| Index: acgeneral.m4
| --- acgeneral.m4      Mon Oct 30 09:39:35 2000
| +++ acgeneral.m4      Mon Oct 30 10:03:33 2000
| @@ -2794,7 +2794,7 @@
|  define([AC_MSG_ERROR],
|  [{ _AC_ECHO([configure:__oline__: error: $1], AC_FD_LOG)
|    _AC_ECHO([configure: error: $1], 2)
| -  AS_EXIT([m4_default([$2], 1)]); }])
| +  AS_EXIT([$2]); }])
|  
|  
|  # AU::AC_CHECKING(FEATURE)
| Index: m4sh.m4
| --- m4sh.m4   Mon Oct 30 09:39:35 2000
| +++ m4sh.m4   Mon Oct 30 10:33:06 2000
| @@ -106,8 +106,13 @@
|  # We cannot simply use "exit N" because some shells (zsh and Solaris sh)
|  # will not set $? to N while running the code set by "trap 0"
|  # So we set $? by executing "exit N" in the subshell and then exit.
| +# "false" is used for exit code 1 (default), ":" is used for 0
|  define([AS_EXIT],
| -[{ (exit m4_default([$1], 1)); exit; }])
| +[{ m4_case([$1],
| +           0, [:; exit],
| +           [], [false; exit],
| +           1, [false; exit],
| +           [(exit $1); exit]) }])



| +[{ m4_case([$1],
| +           [0], [:; exit],
| +           [],  [false; exit],
| +           [1], [false; exit],
| +           [(exit $1); exit]); }])

Fine with me :)  Aside from my alignment, pay attention to the
trailing semicolon.