On Sat, 21 Aug 2010, Taco Hoekwater wrote:
Hi all,
Today I started preparations for my activities at the ConTeXt meeting.
There are two small lua tutorials in the program, and I am looking
for input on both. There is one that is supposed to be a general
beginner's introduction, and one specifically about fonts.
For both, I am looking for input on what subjects I should cover?
Since both tutorials will end up as articles/wiki pages, it makes
sense to ask everybody on the list for input (but requests by actual
attendees will be scored considerably higher).
Some things that took a lot of trial and error for me to learn:
* Write a macro that passes its argument as a string to a lua function
* Write a macro that passes its argument as a function to a lua function
* Write a macro that passes a lua function to another lua function.
* Write a macro that passes an anonymous function to another lua function.
For example, I should be able to do:
\ToString{ABC with all " sorts ' of [[ weird [=[ characters [==[ [===[
[====[}
\ToTable{ ['A'] = B, ['B'] = A }
\ToFunction{ table.merge }
\ToFunction{ function (a, b) do return (a+b) end }
Slightly more advanced is how write a \setup command that can take these
as an argument and pass it to a luafunction. For example
\setupwhatever
[ string={ABC with all " sorts ' of [[ weird [=[ charactes [===[
[====[",
table={ ['A'] = B, ['B'] = A },
function = {table.merge},
anon={funcion (a,b) do return (a+b) end},
]
On hindsight, these are simple. But there is no documentaion on how
lua sees the TeX arguments, and you need to understand how \directlua
expands its arguments...something that can be very frustrating in the
beginning.
Aditya
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the
Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://tex.aanhet.net
archive : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___________________________________________________________________________________
