1 files changed, 53 insertions, 31 deletions

diff --git a/arabluatex.lua b/arabluatex.lua
index f639770..114a569 100644
--- a/arabluatex.lua
+++ b/arabluatex.lua
@@ -2,24 +2,23 @@
 This file is part of the `arabluatex' package
 
 ArabLuaTeX -- Processing ArabTeX notation under LuaLaTeX
-Copyright (C) 2016--2022  Robert Alessi
+Copyright (C) 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023
+Robert Alessi <alessi@robertalessi.net>
 
-Please send error reports and suggestions for improvements to Robert
-Alessi <alessi@robertalessi.net>
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
+Permission to use, copy, modify, and distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
 
-This program is distributed in the hope that it will be useful, but
-WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-General Public License for more details.
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
-You should have received a copy of the GNU General Public License
-along with this program.  If not, see
-<http://www.gnu.org/licenses/>.
+Please send error reports and suggestions for improvements to Robert
+Alessi <alessi@robertalessi.net>
 --]]
 
 arabluatex = {}
@@ -54,11 +53,26 @@ local cmd = lpeg.Cs(dblbkslash * ascii^1 * cmdstar^-1)
 local rawcmd = lpeg.Cs(dblbkslash * ascii^1)
 local aftercmd = lpeg.Cs(lpeg.S("*[{,.?;:'`\"") + dblbkslash)
 local cmdargs = lpeg.Cs(spce^-1 * bsqbracketsii * bcbracesii * bsqbrackets^-1)
+local cmdargsnobs = lpeg.Cs(spce^-1 * bcbracesii)
 local arbargs = lpeg.Cs(spce^-1 * bsqbrackets^-1 * bcbraces)
 local baytargs = lpeg.Cs(spce * bcbraces * bsqbrackets^-1 * bcbraces)
 local arind = lpeg.Cs(dblbkslash * lpeg.P("arind") * spce^-1 * bsqbracketsii)
 
 local function protectarb(str)
+   -- \App[]{}{}
+   str = string.gsub(str, "(\\App%s?)(%b{})(%b{})", "%1[]%2%3")
+   str = gsub(str, lpeg.P("\\App") * spcenc^-1 * bsqbrackets * bcbraces * bcbraces,
+              function(opt, lem, rdg)
+                 opt = string.sub(opt, 2, -2)
+                 lem = string.sub(lem, 2, -2)
+                 rdg = string.sub(rdg, 2, -2)
+                 if opt == ""
+                 then
+                    return string.format("\\app{%s%s}", lem, rdg)
+                 else
+                    return string.format("\\app[%s]{%s%s}", opt, lem, rdg)
+                 end
+   end)
    str = string.gsub(str, "(\\arb%s?)(%[.-%])(%b{})", "\\al@brk{\\arb%2%3}")
    str = string.gsub(str, "(\\LR%s?)(%b{})", "\\@LR%2")
    str = string.gsub(str, "(\\RL%s?)(%b{})", "\\@RL%2")
@@ -90,7 +104,6 @@ local outofarb = {
 local albrkcmds = {
    "begin",
    "end",
-   "par",
    "LRmarginpar",
    "arbmark",
    "abjad",
@@ -121,13 +134,15 @@ function arabluatex.mkarbbreak(str, opt)
 end
 
 local function breakcmd(str)
+   -- \par
+   str = gsub(str, dblbkslash * lpeg.Cs("par") * cmdargsnobs, "\\al@brk{%1%2%3}")
    -- process \item[], then \item[]
-        str = string.gsub(str, "\\(item.?)(%b[])",
-          function(tag, body)
-          body = string.sub(body, 2, -2)
-          return string.format("\\al@brk{\\item[\\arb{%s}] }", body)
-        end)
-        str = string.gsub(str, "(\\item)(%s+)", "%1{}%2")
+   str = string.gsub(str, "\\(item.?)(%b[])",
+                     function(tag, body)
+                        body = string.sub(body, 2, -2)
+                        return string.format("\\al@brk{\\item[\\arb{%s}] }", body)
+   end)
+   str = string.gsub(str, "(\\item)(%s+)", "%1{}%2")
    -- \textcolor
         str = string.gsub(str, "\\(textcolor%s?)(%b{})(%b{})",
                           function(tag, bodycolor, bodytext)
@@ -189,10 +204,15 @@ local function arbnum(str) -- not used, see below
    return str
 end
 
-local function indnum(str)
-   str = string.gsub(str, "([0-9%,%-%/]+)", function(num)
-        return string.reverse(num)
-   end)
+local function indnum(str, dir)
+   if dir == "ltr"
+   then
+      -- do nothing
+   else
+      str = string.gsub(str, "([0-9%,%-%/]+)", function(num)
+                           return string.reverse(num)
+      end)
+   end
    if indorarbnum == "Indian"
    then
       for i = 1,#numbers do
@@ -820,16 +840,16 @@ local function processarbtoutf(str)
                         end)
                         return string.format("%s{%s}", tag, body)
    end)
-   str = string.gsub(str, "(\\bayt)%s?(%b{})(%b[])(%b{})", function(tag, argi, argii, argiii)
+   str = string.gsub(str, "(\\bayt)%s?(%+?)(%b{})(%b[])(%b{})", function(tag, plus, argi, argii, argiii)
                         argi = string.sub(argi, 2, -2)
                         argii = string.sub(argii, 2, -2)
                         argiii = string.sub(argiii, 2, -2)
-                        return string.format("%s*{\\arb{%s}}[\\arb{%s}]{\\arb{%s}}", tag, argi, argii, argiii)
+                        return string.format("%s%s*{\\arb{%s}}[\\arb{%s}]{\\arb{%s}}", tag, argi, argii, argiii)
    end)
-   str = string.gsub(str, "(\\bayt)%s?(%b{})(%b{})", function(tag, argi, argii)
+   str = string.gsub(str, "(\\bayt)%s?(%+?)(%b{})(%b{})", function(tag, plus, argi, argii)
                         argi = string.sub(argi, 2, -2)
                         argii = string.sub(argii, 2, -2)
-                        return string.format("%s*{\\arb{%s}}{\\arb{%s}}", tag, argi, argii)
+                        return string.format("%s%s*{\\arb{%s}}{\\arb{%s}}", tag, plus, argi, argii)
    end)
    str = string.gsub(str, "(\\prname)%s?(%b{})", function(tag, body)
                         body = string.sub(body, 2, -2)
@@ -1287,7 +1307,9 @@ end
 function arabluatex.ayah(str)
    if tonumber(str) ~= nil and str.len(str) < 4 then
       if tex.textdir == "TRT" then
-         str = indnum(str).."^^^^06dd"
+         -- end of ayah is typeset LTR and the number comes after the
+         -- sign (see https://github.com/aliftype/amiri/issues/263#issuecomment-1872979252)
+         str = "{\\textdir TLT ".."^^^^06dd"..indnum(str, "ltr").."}"
       elseif tex.textdir == "TLT" then
          str = "\\arb[trans]{("..str..")}"
       end