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      1  1.15  rillig # $NetBSD: cond-op-or.mk,v 1.15 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   1.6  rillig .  error
      7   1.3  rillig .endif
      8   1.3  rillig 
      9   1.3  rillig .if !(1 || 0)
     10   1.6  rillig .  error
     11   1.3  rillig .endif
     12   1.3  rillig 
     13   1.3  rillig .if !(0 || 1)
     14   1.6  rillig .  error
     15   1.3  rillig .endif
     16   1.3  rillig 
     17   1.3  rillig .if !(1 || 1)
     18   1.6  rillig .  error
     19   1.3  rillig .endif
     20   1.3  rillig 
     21   1.7  rillig 
     22   1.3  rillig # The right-hand side is not evaluated since the left-hand side is already
     23   1.3  rillig # true.
     24   1.3  rillig .if 1 || ${UNDEF}
     25   1.3  rillig .endif
     26   1.1  rillig 
     27   1.8  rillig # When an outer condition makes the inner '||' condition irrelevant, neither
     28  1.12  rillig # of its operands is evaluated.
     29   1.7  rillig .if 0 && (!defined(UNDEF) || ${UNDEF})
     30   1.7  rillig .endif
     31   1.7  rillig 
     32   1.8  rillig # Test combinations of outer '&&' with inner '||', to ensure that the operands
     33  1.12  rillig # of the inner '||' are only evaluated if necessary.
     34   1.8  rillig DEF=	defined
     35  1.14  rillig # expect+1: Variable "UNDEF" is undefined
     36  1.12  rillig .if 1 && (!${DEF} || ${UNDEF})
     37   1.8  rillig .endif
     38  1.12  rillig .if 1 && (${DEF} || ${UNDEF})
     39   1.8  rillig .endif
     40  1.14  rillig # expect+1: Variable "UNDEF" is undefined
     41  1.12  rillig .if 1 && (!${UNDEF} || ${UNDEF})
     42   1.8  rillig .endif
     43  1.14  rillig # expect+1: Variable "UNDEF" is undefined
     44  1.12  rillig .if 1 && (${UNDEF} || ${UNDEF})
     45   1.8  rillig .endif
     46  1.12  rillig .if 0 && (!${DEF} || ${UNDEF})
     47   1.8  rillig .endif
     48  1.12  rillig .if 0 && (${DEF} || ${UNDEF})
     49   1.8  rillig .endif
     50  1.12  rillig .if 0 && (!${UNDEF} || ${UNDEF})
     51   1.8  rillig .endif
     52  1.12  rillig .if 0 && (${UNDEF} || ${UNDEF})
     53   1.8  rillig .endif
     54   1.8  rillig 
     55   1.7  rillig 
     56   1.5  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  1.15  rillig # expect+1: Unknown operator "|"
     60   1.4  rillig .if 0 | 0
     61   1.4  rillig .  error
     62  1.12  rillig .else
     63  1.12  rillig .  error
     64   1.4  rillig .endif
     65  1.15  rillig # expect+1: Unknown operator "|"
     66   1.4  rillig .if !(1 | 0)
     67   1.4  rillig .  error
     68  1.12  rillig .else
     69  1.12  rillig .  error
     70   1.4  rillig .endif
     71  1.15  rillig # expect+1: Unknown operator "|"
     72   1.4  rillig .if !(0 | 1)
     73   1.4  rillig .  error
     74  1.12  rillig .else
     75  1.12  rillig .  error
     76   1.4  rillig .endif
     77  1.15  rillig # expect+1: Unknown operator "|"
     78   1.4  rillig .if !(1 | 1)
     79   1.4  rillig .  error
     80  1.12  rillig .else
     81  1.12  rillig .  error
     82   1.4  rillig .endif
     83   1.4  rillig 
     84  1.12  rillig # There is no operator '|||'.  The first two '||' form an operator, the third
     85  1.12  rillig # '|' forms the next (incomplete) token.
     86  1.15  rillig # expect+1: Unknown operator "|"
     87   1.4  rillig .if 0 ||| 0
     88   1.4  rillig .  error
     89  1.12  rillig .else
     90  1.12  rillig .  error
     91   1.4  rillig .endif
     92   1.4  rillig 
     93  1.10  rillig # The '||' operator must be preceded by whitespace, otherwise it becomes part
     94  1.12  rillig # of the preceding bare word.  The condition starts with a digit and is thus
     95  1.12  rillig # parsed as '"0||" != "" || 0'.
     96  1.12  rillig .if 0|| || 0
     97  1.10  rillig .else
     98  1.10  rillig .  error
     99  1.10  rillig .endif
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