From d6397857b9a28e7a73d6806422dcb03112441711 Mon Sep 17 00:00:00 2001
From: Robert Alessi <alessi@robertalessi.net>
Date: Tue, 26 Apr 2016 13:02:21 +0200
Subject: implementation of abjad numbering in Lua, so that polyglossia no
 longer be needed (this is much more flexible)

---
 arabluatex.dtx |  2 ++
 arabluatex.lua | 42 ++++++++++++++++++++++++++++++++++++++++--
 2 files changed, 42 insertions(+), 2 deletions(-)

diff --git a/arabluatex.dtx b/arabluatex.dtx
index bd9810c..79d038d 100644
--- a/arabluatex.dtx
+++ b/arabluatex.dtx
@@ -1967,6 +1967,8 @@ wa-ya.sIru ta.hta 'l-jildi
   {\NewDocumentCommand{\RL}{m}{\bgroup\textdir TRT#1\rmfamily\egroup}}}
 %    \end{macrocode}
 % \end{macro}
+\NewDocumentCommand{\abjad}{m}%
+  {\luadirect{tex.sprint(abjadify(#1))}}
 % \begin{macro}{\aemph} Arabic emphasis. Needs to be redefined as well.
 %    \begin{macrocode}
 \AtBeginDocument{\ifdef{\aemph}%
diff --git a/arabluatex.lua b/arabluatex.lua
index f6597e8..102974a 100644
--- a/arabluatex.lua
+++ b/arabluatex.lua
@@ -72,11 +72,11 @@ local function breakcmd(str)
 		body = string.sub(body, 2, -2)
 		return string.format("}\\%s{%s}\\arb{", tag, body)
 		end)
-   -- Abjad (Needs polyglossia)
+   -- Abjad
    str = string.gsub(str, "\\(abjad.-)(%b{})",
 	function(tag, body)
 	body = string.sub(body, 2, -2)
-	return string.format("}\\aemph{\\txarb{\\%s{%s}}}\\arb{", tag, body)
+	return string.format("}\\aemph{\\%s{%s}}\\arb{", tag, body)
 	end)
    return str
 end
@@ -115,6 +115,14 @@ local function indnum(str)
    return str
 end
 
+local function takeoutabjad(str)
+   str = string.gsub(str, "(\\abjad.?)(%b{})", function(tag, body)
+			body = string.sub(body, 2, -2)
+			return string.format("%s", body)
+   end)
+   return str
+end
+
 local function takeoutcap(str)
    str = string.gsub(str, "(\\cap.?)(%b{})", function(tag, body)
 			body = string.sub(body, 2, -2)
@@ -339,6 +347,7 @@ end
 
 function processtrans(str, mode)
    str = "\\arb{".. str.."}"
+   str = takeoutabjad(str)
    str = protectarb(str)
    str = breakcmd(str)
    str = holdcmd(str)
@@ -371,3 +380,32 @@ function cap(str)
    end
 return str
 end
+
+local abjad = {
+{"a\"'", "b", "j", "d", "h", "w", "z", ".h", ".t"},
+{"y", "k", "l", "m", "n", "s", "`", "f", ".s", },
+{"q", "r", "^s", "t", "_t", "x", "_d", ".d", ".z", },
+{".g"}
+}
+
+function abjadify(n)
+    local result = ""
+    if n >= 1000 then
+        for i=1,math.floor(n/1000) do
+            result = result .. abjad[4][1]
+        end
+        n = math.fmod(n,1000)
+    end
+    if n >= 100 then
+        result = result .. abjad[3][math.floor(n/100)]
+        n = math.fmod(n, 100)
+    end
+    if n >= 10 then
+        result = result .. abjad[2][math.floor(n/10)]
+        n = math.fmod(n, 10)
+    end
+    if n >= 1 then
+        result = result .. abjad[1][math.floor(n/1)]
+    end
+    return "\\arb{"..result.."}"
+end
-- 
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