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      1 # $NetBSD: cond-op-or.mk,v 1.15 2025/06/28 22:39:28 rillig Exp $
      2 #
      3 # Tests for the || operator in .if conditions.
      4 
      5 .if 0 || 0
      6 .  error
      7 .endif
      8 
      9 .if !(1 || 0)
     10 .  error
     11 .endif
     12 
     13 .if !(0 || 1)
     14 .  error
     15 .endif
     16 
     17 .if !(1 || 1)
     18 .  error
     19 .endif
     20 
     21 
     22 # The right-hand side is not evaluated since the left-hand side is already
     23 # true.
     24 .if 1 || ${UNDEF}
     25 .endif
     26 
     27 # When an outer condition makes the inner '||' condition irrelevant, neither
     28 # of its operands is evaluated.
     29 .if 0 && (!defined(UNDEF) || ${UNDEF})
     30 .endif
     31 
     32 # Test combinations of outer '&&' with inner '||', to ensure that the operands
     33 # of the inner '||' are only evaluated if necessary.
     34 DEF=	defined
     35 # expect+1: Variable "UNDEF" is undefined
     36 .if 1 && (!${DEF} || ${UNDEF})
     37 .endif
     38 .if 1 && (${DEF} || ${UNDEF})
     39 .endif
     40 # expect+1: Variable "UNDEF" is undefined
     41 .if 1 && (!${UNDEF} || ${UNDEF})
     42 .endif
     43 # expect+1: Variable "UNDEF" is undefined
     44 .if 1 && (${UNDEF} || ${UNDEF})
     45 .endif
     46 .if 0 && (!${DEF} || ${UNDEF})
     47 .endif
     48 .if 0 && (${DEF} || ${UNDEF})
     49 .endif
     50 .if 0 && (!${UNDEF} || ${UNDEF})
     51 .endif
     52 .if 0 && (${UNDEF} || ${UNDEF})
     53 .endif
     54 
     55 
     56 # The || operator may be abbreviated as |.  This is not widely known though
     57 # and is also not documented in the manual page.
     58 
     59 # expect+1: Unknown operator "|"
     60 .if 0 | 0
     61 .  error
     62 .else
     63 .  error
     64 .endif
     65 # expect+1: Unknown operator "|"
     66 .if !(1 | 0)
     67 .  error
     68 .else
     69 .  error
     70 .endif
     71 # expect+1: Unknown operator "|"
     72 .if !(0 | 1)
     73 .  error
     74 .else
     75 .  error
     76 .endif
     77 # expect+1: Unknown operator "|"
     78 .if !(1 | 1)
     79 .  error
     80 .else
     81 .  error
     82 .endif
     83 
     84 # There is no operator '|||'.  The first two '||' form an operator, the third
     85 # '|' forms the next (incomplete) token.
     86 # expect+1: Unknown operator "|"
     87 .if 0 ||| 0
     88 .  error
     89 .else
     90 .  error
     91 .endif
     92 
     93 # The '||' operator must be preceded by whitespace, otherwise it becomes part
     94 # of the preceding bare word.  The condition starts with a digit and is thus
     95 # parsed as '"0||" != "" || 0'.
     96 .if 0|| || 0
     97 .else
     98 .  error
     99 .endif
    100