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      1  1.13  rillig # $NetBSD: cond-op-and.mk,v 1.13 2025/06/28 22:39:28 rillig Exp $
      2   1.1  rillig #
      3   1.2  rillig # Tests for the && operator in .if conditions.
      4   1.1  rillig 
      5   1.3  rillig .if 0 && 0
      6   1.5  rillig .  error
      7   1.3  rillig .endif
      8   1.3  rillig 
      9   1.3  rillig .if 1 && 0
     10   1.5  rillig .  error
     11   1.3  rillig .endif
     12   1.3  rillig 
     13   1.3  rillig .if 0 && 1
     14   1.5  rillig .  error
     15   1.3  rillig .endif
     16   1.3  rillig 
     17   1.3  rillig .if !(1 && 1)
     18   1.5  rillig .  error
     19   1.3  rillig .endif
     20   1.3  rillig 
     21   1.6  rillig 
     22   1.3  rillig # The right-hand side is not evaluated since the left-hand side is already
     23   1.3  rillig # false.
     24   1.3  rillig .if 0 && ${UNDEF}
     25   1.3  rillig .endif
     26   1.1  rillig 
     27   1.6  rillig # When an outer condition makes the inner '&&' condition irrelevant, neither
     28  1.10  rillig # of its operands is evaluated.
     29   1.6  rillig .if 1 || (${UNDEF} && ${UNDEF})
     30   1.6  rillig .endif
     31   1.6  rillig 
     32   1.6  rillig # Test combinations of outer '||' with inner '&&', to ensure that the operands
     33   1.6  rillig # of the inner '&&' are only evaluated if necessary.
     34   1.6  rillig DEF=	defined
     35  1.12  rillig # expect+1: Variable "UNDEF" is undefined
     36   1.6  rillig .if 0 || (${DEF} && ${UNDEF})
     37   1.6  rillig .endif
     38   1.6  rillig .if 0 || (!${DEF} && ${UNDEF})
     39   1.6  rillig .endif
     40  1.12  rillig # expect+1: Variable "UNDEF" is undefined
     41   1.6  rillig .if 0 || (${UNDEF} && ${UNDEF})
     42   1.6  rillig .endif
     43  1.12  rillig # expect+1: Variable "UNDEF" is undefined
     44   1.6  rillig .if 0 || (!${UNDEF} && ${UNDEF})
     45   1.6  rillig .endif
     46   1.6  rillig .if 1 || (${DEF} && ${UNDEF})
     47   1.6  rillig .endif
     48   1.6  rillig .if 1 || (!${DEF} && ${UNDEF})
     49   1.6  rillig .endif
     50   1.6  rillig .if 1 || (${UNDEF} && ${UNDEF})
     51   1.6  rillig .endif
     52   1.6  rillig .if 1 || (!${UNDEF} && ${UNDEF})
     53   1.6  rillig .endif
     54   1.6  rillig 
     55   1.6  rillig 
     56   1.4  rillig # The && operator may be abbreviated as &.  This is not widely known though
     57   1.4  rillig # and is also not documented in the manual page.
     58   1.4  rillig 
     59  1.13  rillig # expect+1: Unknown operator "&"
     60   1.4  rillig .if 0 & 0
     61   1.4  rillig .  error
     62  1.10  rillig .else
     63  1.10  rillig .  error
     64   1.4  rillig .endif
     65  1.13  rillig # expect+1: Unknown operator "&"
     66   1.4  rillig .if 1 & 0
     67   1.4  rillig .  error
     68  1.10  rillig .else
     69  1.10  rillig .  error
     70   1.4  rillig .endif
     71  1.13  rillig # expect+1: Unknown operator "&"
     72   1.4  rillig .if 0 & 1
     73   1.4  rillig .  error
     74  1.10  rillig .else
     75  1.10  rillig .  error
     76   1.4  rillig .endif
     77  1.13  rillig # expect+1: Unknown operator "&"
     78   1.4  rillig .if !(1 & 1)
     79   1.4  rillig .  error
     80  1.10  rillig .else
     81  1.10  rillig .  error
     82   1.4  rillig .endif
     83   1.4  rillig 
     84  1.10  rillig # There is no operator '&&&'.  The first two '&&' form an operator, the third
     85  1.10  rillig # '&' forms the next (incomplete) token.
     86  1.13  rillig # expect+1: Unknown operator "&"
     87   1.4  rillig .if 0 &&& 0
     88   1.4  rillig .  error
     89  1.10  rillig .else
     90  1.10  rillig .  error
     91   1.4  rillig .endif
     92   1.4  rillig 
     93   1.8  rillig # The '&&' operator must be preceded by whitespace, otherwise it becomes part
     94  1.10  rillig # of the preceding bare word.  The condition starts with a digit and is thus
     95  1.10  rillig # parsed as '"1&&" != "" && 1'.
     96   1.8  rillig .if 1&& && 1
     97   1.8  rillig .else
     98   1.8  rillig .  error
     99   1.8  rillig .endif
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