From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.text.pandoc/32538 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: BPJ Newsgroups: gmane.text.pandoc Subject: Re: Use Writer in Lua Filter? 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[209.85.219.179]) by gmr-mx.google.com with ESMTPS id by4-20020a056808340400b0038409c2d352si473158oib.2.2023.05.06.01.53.14 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 06 May 2023 01:53:14 -0700 (PDT) Received-SPF: pass (google.com: domain of melroch-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org designates 209.85.219.179 as permitted sender) client-ip=209.85.219.179; Original-Received: by mail-yb1-f179.google.com with SMTP id 3f1490d57ef6-b9e27684b53so2406339276.0 for ; Sat, 06 May 2023 01:53:14 -0700 (PDT) X-Received: by 2002:a25:b101:0:b0:b99:53e9:ba97 with SMTP id g1-20020a25b101000000b00b9953e9ba97mr4914391ybj.43.1683363193839; Sat, 06 May 2023 01:53:13 -0700 (PDT) In-Reply-To: X-Original-Sender: melroch-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org X-Original-Authentication-Results: gmr-mx.google.com; spf=pass (google.com: domain of melroch-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org designates 209.85.219.179 as permitted sender) smtp.mailfrom=melroch-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org Precedence: list Mailing-list: list pandoc-discuss-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org; contact pandoc-discuss+owners-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org List-ID: X-Google-Group-Id: 1007024079513 List-Post: , List-Help: , List-Archive: , List-Unsubscribe: , Xref: news.gmane.io gmane.text.pandoc:32538 Archived-At: --00000000000032671505fb02890f Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Also assigning `nil` to a table key/index deletes that key/index. A table value can't be `nil`: ``````lua local t =3D { a =3D 1, b =3D 2, c =3D 3 } for k,v in pairs(t) do print(k, v) end -- prints -- a 1 -- b 2 -- c 3 -- but in a random order t.b =3D nil for k,v in pairs(t) do print(k,v) end -- Doesn't print b 2 because it doesn't exist anymore! `````` Den l=C3=B6r 6 maj 2023 10:35BPJ skrev: > > > Den fre 5 maj 2023 10:04ThomasH skrev: > >> Ah, ok, sorry, I've only come to Lua through Pandoc, so I'm often not >> aware of general Lua features. I will keep an eye open for the 'show' >> method. >> >> T. >> > > See > > https://www.lua.org/manual/5.4/manual.html > > https://learnxinyminutes.com/docs/lua/ > > Note that the latter seems to fail to mention that the full syntax for > long strings and comments includes balanced `=3D` characters between the > brackets so that you can include double brackets with or without a lower > number of `=3D` chars in the string, e.g. > > ``````lua > local foo =3D [=3D=3D=3D[ [=3D=3D[ [=3D[ [[ foo ]] ]=3D] ]=3D=3D] ]=3D=3D= =3D] > `````` > > is a single string delimited by `[=3D=3D=3D[` and `]=3D=3D=3D]` > > Also escapes like `\n` don't work in long strings. > > > > >> On Friday, May 5, 2023 at 7:26:41=E2=80=AFAM UTC+2 Albert Krewinkel wrot= e: >> >>> >>> ThomasH writes: >>> >>> > I just wished that would have been more apparent from the docs. >>> >>> The `tostring` function is the default Lua way to convert an object "to >>> a string in a human-readable format". Still, I made a mental note to ad= d >>> better docs once we switch from a Haskell to a Lua representation as >>> `tostring` output. >>> >>> The Haskell/native output will probably become available via show >>> methods, as in `block:show()`. This already works for Block elements, >>> but not for Inlines. >>> >>> >>> >> Albert Krewinkel writes: >>> >> >>> >> > The alternative is to use `pandoc.write`, e.g.: >>> >> > >>> >> > print(pandoc.write(pandoc.Pandoc {element})) >>> >> >>> >> The above is missing the second parameter: >>> >> >>> >> print(pandoc.write(pandoc.Pandoc {element}, 'native')) >>> >>> >>> -- >>> Albert Krewinkel >>> GPG: 8eed e3e2 e8c5 6f18 81fe e836 388d c0b2 1f63 1124 >>> >> -- >> You received this message because you are subscribed to the Google Group= s >> "pandoc-discuss" group. >> To unsubscribe from this group and stop receiving emails from it, send a= n >> email to pandoc-discuss+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/pandoc-discuss/79a8dca6-9860-4109-b2e8= -5841faa36cc0n%40googlegroups.com >> >> . >> > --=20 You received this message because you are subscribed to the Google Groups "= pandoc-discuss" group. To unsubscribe from this group and stop receiving emails from it, send an e= mail to pandoc-discuss+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To view this discussion on the web visit https://groups.google.com/d/msgid/= pandoc-discuss/CADAJKhCiFbdbX7QdtODq3Vd3hemrObiFpi0W9fmf_hyS077T-g%40mail.g= mail.com. --00000000000032671505fb02890f Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Also assigning `nil` to a table key/index deletes that ke= y/index. A table value can't be `nil`:

``````lua
local t =3D { a =3D 1, b =3D = 2, c =3D 3 }
for k,v in pairs(t) do
=C2=A0 print(k, v)
end
-- prints
-- a=C2=A0 =C2=A0 1
-- b=C2=A0 =C2=A0 2
-- c=C2=A0 =C2=A0 3
-- but in a random order
t.b =3D nil
for k,v in pairs(t) do print(k,v) end
-- Doesn't print b=C2=A0 =C2=A0 2 because it doesn't exist a= nymore!
``````

Den l=C3=B6r 6 maj 2023 10:35BPJ= <bpj-J3H7GcXPSITLoDKTGw+V6w@public.gmane.org> skrev:


Den fre 5 maj 2023 1= 0:04ThomasH <therch-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> skrev:
Ah, ok, sorry, I've only come to Lua through Pandoc,= so I'm often not aware of general Lua features. I will keep an eye ope= n for the 'show' method.

T.

See=C2=A0=


<= div dir=3D"auto">https://learnxinyminutes.com/docs/lua/

Note that the latter = seems to fail to mention that the full syntax for long strings and comments= includes balanced `=3D` characters between the brackets so that you can in= clude double brackets with or without a lower number of `=3D` chars in the = string, e.g.

``````lua
local foo =3D [=3D=3D=3D[ [=3D=3D[ [=3D[ [[ foo ]] ]= =3D] ]=3D=3D] ]=3D=3D=3D]
``````

is a single string delimited by `[=3D=3D=3D= [` and `]=3D=3D=3D]`

Als= o escapes like `\n` don't work in long strings.
=



O= n Friday, May 5, 2023 at 7:26:41=E2=80=AFAM UTC+2 Albert Krewinkel wrote:

ThomasH <the...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org<= /a>> writes:

> I just wished that would have been more apparent from the docs.

The `tostring` function is the default Lua way to convert an object &qu= ot;to
a string in a human-readable format". Still, I made a mental note = to add
better docs once we switch from a Haskell to a Lua representation as
`tostring` output.

The Haskell/native output will probably become available via show
methods, as in `block:show()`. This already works for Block elements,
but not for Inlines.


>> Albert Krewinkel <albert...-9EawChwDxG8hFhg+JK9F0w@public.gmane.org> writes:
>>
>> > The alternative is to use `pandoc.write`, e.g.:
>> >
>> > print(pandoc.write(pandoc.Pandoc {element}))
>>
>> The above is missing the second parameter:
>>
>> print(pandoc.write(pandoc.Pandoc {element}, 'native'))


--=20
Albert Krewinkel
GPG: 8eed e3e2 e8c5 6f18 81fe e836 388d c0b2 1f63 1124

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