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posix-expansion.mk revision 1.1 
      1  1.1  rillig # $NetBSD: posix-expansion.mk,v 1.1 2025/04/13 09:29:33 rillig Exp $
      2  1.1  rillig #
      3  1.1  rillig # https://pubs.opengroup.org/onlinepubs/9799919799/utilities/make.html#tag_20_76_13_05
      4  1.1  rillig #
      5  1.1  rillig # In POSIX mode, when expanding an expression containing modifiers, the
      6  1.1  rillig # modifiers specified in POSIX take precedence over the BSD-style modifiers.
      7  1.1  rillig 
      8  1.1  rillig .POSIX:
      9  1.1  rillig 
     10  1.1  rillig 
     11  1.1  rillig MOD_SUBST=	S s from to
     12  1.1  rillig # The modifier contains a "=" and is thus the POSIX modifier.
     13  1.1  rillig .if ${MOD_SUBST:S=from=to=} != "from=to= s from to"
     14  1.1  rillig # FIXME: POSIX mode must be active here.
     15  1.1  rillig # expect+1: Missing argument for ".error"
     16  1.1  rillig .  error
     17  1.1  rillig .endif
     18  1.1  rillig # The modifier does not contain a "=" and thus falls back to the BSD modifier.
     19  1.1  rillig .if ${MOD_SUBST:S,from,to,} != "S s to to"
     20  1.1  rillig .  error
     21  1.1  rillig .endif
     22  1.1  rillig 
     23  1.1  rillig 
     24  1.1  rillig all:
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