add german letters

README.md

@@ -1,15 +1,40 @@
 # ehlphabet
-Fork of the original abjphabet mod by ABJ  
-https://forum.minetest.net/viewtopic.php?f=11&t=11744  
-  
-Letter blocks can be created with the Letter Machine or given with /giveme ehlphabet:(ascii decimal)  
-Example: '/giveme ehlphabet:65' will give you a block with the letter 'A' on it.  
-http://www.asciitable.com/  
-  
-Textures were created using Title Wave font by Digital Graphic Labs  
+Fork of the original [abjphabet mod](https://forum.minetest.net/viewtopic.php?f=11&t=11744) by ABJ
+
+![screenshot](screenshot.png)
+
+**Letter Machine Reciepe**|**Letter Machine UI**
+----|----
+![Letter Machine Reciepe](reciepe.png)|![Letter Machine UI](lmui.png)
+
+Letter blocks can be created with the Letter Machine or given with /giveme ehlphabet:(ascii decimal)
+
+Example: `/giveme ehlphabet:65` will give you a block with the letter [**A**] on it.
+http://www.asciitable.com/
+
+For UTF-8 characters add one more identifier /giveme ehlphabet:(first byte decimal)_(second byle decimal)
+
+Example: `/giveme ehlphabet:195_132` will give you a block with the letter [**Ä**] on it.
+http://www.utf8-chartable.de/
+
+## Textures
+
+Textures were generated using [**phantomjs**](http://phantomjs.org/download.html) script "gen.js" included in this repository.
+
+To (re)generate textures run:
+
+    $ phantomjs gen.js
+
+To customize the look and size of letters, you need to know basic HTML and CSS and change it inside "gen.js".
+
+## License
+
 Textures are licensed under CC-BY-SA 3.0
 
+## Changelist
 
-20180124
-patched by Och_Noe to use it as replacement for abjphabet
-(create aliases)
+2018-01-24 patched by Och_Noe to use it as replacement for abjphabet (create aliases)
+
+2018-03-29 support for UTF-8 and cyrillic letters added
+
+2018-03-31 german letters added

gen.js

@@ -20,6 +20,8 @@ var chars = [
   // special chars
   "!", "#", "$", "%", "&", "(", ")", "*", "+", ",", "-", ".", "/", ":", ";",
   "<", "=", ">", "?", "@", '"', "'",
+  // german
+  "Ä", "Ö", "Ü", "ß",
   // cyrillic
   "А", "Б", "В", "Г", "Д", "Е", "Ё", "Ж", "З", "И", "Й", "К", "Л", "М", "Н",
   "О", "П", "Р", "С", "Т", "У", "Ф", "Х", "Ц", "Ч", "Ш", "Щ", "Ъ", "Ы", "Ь",

init.lua

@@ -7,6 +7,7 @@ local special_chars = {
     "!", "#", "$", "%", "&", "(", ")", "*", "+", ",", "-", ".", "/", ":", ";",
     "<", "=", ">", "?", "@", "'", '"'
 }
+local german_chars = {"Ä", "Ö", "Ü", "ß"}
 local cyrillic_chars = {
     "А", "Б", "В", "Г", "Д", "Е", "Ё", "Ж", "З", "И", "Й", "К", "Л", "М", "Н",
     "О", "П", "Р", "С", "Т", "У", "Ф", "Х", "Ц", "Ч", "Ш", "Щ", "Ъ", "Ы", "Ь",
@@ -26,12 +27,13 @@ end
 
 local function is_multibyte(ch)
     local byte = ch:byte()
-    return (208 == byte) or (209 == byte)
+    return (195 == byte) or (208 == byte) or (209 == byte)
 end
 
 table_merge(characters, base_chars)
 table_merge(characters, digits)
 table_merge(characters, special_chars)
+table_merge(characters, german_chars)
 table_merge(characters, cyrillic_chars)
 
 local create_alias = true
@@ -135,7 +137,7 @@ minetest.register_node(
                 local mb = is_multibyte(ch)
                 local key = mb and (ch:byte(1) .. ch:byte(2)) or ch:byte()
                 for _, v in pairs(characters) do
-                    if v == fields.lettername then
+                    if v == ch then
                         local give = {}
                         give[1] = inv:add_item("output", "ehlphabet:" .. key)
                         inputstack:take_item()