Here, I think we're talking about
M=: (a.=LF)+2*a.e.'0123456789'
S0=: +.".>cutLF {{)n
1j1 2j1 1j1 NB. start here
1j0 2j0 1j0 NB. non-newline
1j0 1j2 1j0 NB. newline
}}
The columns correspond to character classes defined in M: column 2 is
numbers, column 1 is line feeds, column 0 is everything else.
The rows correspond to state. Row 0 is the initial state (state 0).
Row 1 is the typical state after encountering the first character
(state 1). Row 2 is the typical state after encountering a new line
(state 2).
When in state 2, encountering a second newline emits the current word
and puts the machine at state 1, so state 1 which means that if there
were three newlines in a row we would not get a subsequent box
boundary for the third newline. A sequence of four newlines would
result in two boxes, each containing a pair of newlines.
I should have used more accurate comments. Perhaps:
S0=: +.".>cutLF {{)n
1j1 2j1 1j1 NB. start here
1j0 2j0 1j0 NB. typical state
1j0 1j2 1j0 NB. single newline
}}
I hope this makes sense,
--
Raul
On Fri, Jan 13, 2023 at 12:36 PM Pawel Jakubas <[email protected]> wrote:
>
> When looking at S0 as it it is used with M where 0 is other characters, 1
> is LF and 2 digits ....
> I would expect rows to follow this and you have comments that seems not the
> case. For example the third row in S0 is
>
> 1j0 1j2 1j0 NB. newline
>
> I would expect it to represent digit. No?
>
> Also, when we take first row of S0
> 1j1 2j1 1j1 NB. start here
>
> The first element indicates that when being in "other characters"
> state the next one is "other character"
>
> then we transit to LF state without emission action but setting
> beginning of the next word. Shouldn't
>
> this setting be only after LF2 (LF -> LF)?
>
> Thanks!
>
> Pawel
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