zapcap, %zpcb

Path / location trace

!_ is a virtual natural rune that traces the stack if debugging is enabled, putting the current path and location range of each rune.

Produces

Twig: [%zpcb p=spot q=twig]

Sample

p is a ++spot. q is a twig.

Tall form

?!  p

Wide form

?!(p)

Irregular form

!p

Examples

~zod/try=> (ream '20')
[%dtzy p=%ud q=20]
~zod/try=> (ream '!:(20)')
[%zpcb p=[p=/ q=[p=[p=1 q=4] q=[p=1 q=6]]] q=[%dtzy p=%ud q=20]]
~zod/try=> (ream '=+(20 ~)')
[%tsls p=[%dtzy p=%ud q=20] q=[%bczp p=%null]]
~zod/try=> (ream '!:(=+(20 ~))')
[ %zpcb
  p=[p=/ q=[p=[p=1 q=4] q=[p=1 q=12]]]
    q
  [ %tsls
    p=[%zpcb p=[p=/ q=[p=[p=1 q=7] q=[p=1 q=9]]] q=[%dtzy p=%ud q=20]]
    q=[%zpcb p=[p=/ q=[p=[p=1 q=10] q=[p=1 q=11]]] q=[%bczp p=%null]]
  ]
]
~zod/try=> =+(20 !!)
! exit
~zod/try=> !:(=+(20 !!))
! /~zod/try/~2014.10.31..21.11.11..be6c/:<[1 4].[1 13]>
! /~zod/try/~2014.10.31..21.11.11..be6c/:<[1 10].[1 12]>
! exit

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