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Date: Sat, 25 Apr 2015 15:51:48 -0300
Message-ID: <CAO7tK2eoNuxJM0afa7pebCG0j==WPgbJJ+wm_gYn_ksy+FurUA@mail.gmail.com>
Subject: Re: [bpfk] selma'o ZEhEI and PEG
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On Sat, Apr 25, 2015 at 1:37 PM, Alex Burka <durka42@gmail.com> wrote:

> I tried to do this (delete ZEI, add {zei} and {ze'ei} to SI, and move SI
> from post_clause to pre_clause) but I was unable to complete the last step
> without introducing left recursion into the pre_clause rule. So it seems
> easier said than done. I am not an expert in these dark corners of the PEG,
> though.
>

Yes, the magic words section is quite tricky. I think what you need is to
also replace pre_zei_bu with something like:

pre_zei_bu: (BRIVLA / !BU !ZEI !SI !SA !SU !FAhO CMAVO) spaces?

(or a list of all si-erasable selmaho, if you want to be able to identify
the selmaho of the erased/modifier words).

The left recursion occurs because the current pre_zei_bu is calling
pre_clause, which now calls pre_zei_bu, which calls pre_clause, which calls
pre_zei_bu, which calls pre_clause, and so on...

You also need to remove SA_clause from si_clause for the same reason. I
heven't bothered to think what it should be replaced with, since I'd like
SA out of the grammar altogether, but it probably should be some sort of
sa_clause_no_pre added to erasable_clause.

mu'o mi'e xorxes

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<div dir=3D"ltr"><br><div class=3D"gmail_extra"><br><div class=3D"gmail_quo=
te">On Sat, Apr 25, 2015 at 1:37 PM, Alex Burka <span dir=3D"ltr">&lt;<a hr=
ef=3D"mailto:durka42@gmail.com" target=3D"_blank">durka42@gmail.com</a>&gt;=
</span> wrote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px=
 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-=
left-style:solid;padding-left:1ex"><div style=3D"word-wrap:break-word"><div=
 style=3D"font-family:Helvetica,Arial;font-size:13px;color:rgb(0,0,0);margi=
n:0px">I tried to do this (delete ZEI, add {zei} and {ze&#39;ei} to SI, and=
 move SI from post_clause to pre_clause) but I was unable to complete the l=
ast step without introducing left recursion into the pre_clause rule. So it=
 seems easier said than done. I am not an expert in these dark corners of t=
he PEG, though.</div></div></blockquote><div><br></div><div>Yes, the magic =
words section is quite tricky. I think what you need is to also replace pre=
_zei_bu with something like:</div><div><br></div><div>pre_zei_bu: (BRIVLA /=
 !BU !ZEI !SI !SA !SU !FAhO CMAVO) spaces?<br></div><div><br></div><div>(or=
 a list of all si-erasable selmaho, if you want to be able to identify the =
selmaho of the erased/modifier words).</div><div>=C2=A0</div><div>The left =
recursion occurs because the current pre_zei_bu is calling pre_clause, whic=
h now calls pre_zei_bu, which calls pre_clause, which calls pre_zei_bu, whi=
ch calls pre_clause, and so on...</div><div><br></div><div>You also need to=
 remove SA_clause from si_clause for the same reason. I heven&#39;t bothere=
d to think what it should be replaced with, since I&#39;d like SA out of th=
e grammar altogether, but it probably should be some sort of sa_clause_no_p=
re added to erasable_clause.</div><div><br></div><div>mu&#39;o mi&#39;e xor=
xes</div><div><br></div></div></div></div>

<p></p>

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