From 0e618d97132539f0263d3c7183eabeb4f5824658 Mon Sep 17 00:00:00 2001
From: Robert Alessi <alessi@robertalessi.net>
Date: Fri, 24 Aug 2018 09:41:39 +0200
Subject: al_closestream() gobbled spaces after opening braces. also removed
 nested \txarb

---
 arabluatex.dtx | 11 ++++++-----
 arabluatex.lua |  3 ++-
 2 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/arabluatex.dtx b/arabluatex.dtx
index a45b3bd..aa46115 100644
--- a/arabluatex.dtx
+++ b/arabluatex.dtx
@@ -4392,11 +4392,12 @@ wa-ya.sIru ta.hta 'l-jild-i
 %    \end{macrocode}
 % \end{macro}
 % \begin{macro}{\arbmark}
-% \changes{v1.11}{2018/03/31}{New command for inserting additional
-% marks in Arabic environments} \cs{arbmark} takes one argument from a
-% list of defined elements. This command is coded in
-% Lua. \changes{v1.13}{2018/08/23}{New optional argument: either
-% \texttt{rl} or \texttt{lr}}
+%   \changes{v1.11}{2018/03/31}{New command for inserting additional
+%   marks in Arabic environments} \cs{arbmark} takes one argument from
+%   a list of defined elements. \changes{v1.13}{2018/08/23}{New
+%   optional argument: either \texttt{rl} or \texttt{lr}} The mark to
+%   be inserted is determined by contextual analysis or by an
+%   optional argument, either |rl| or |lr|. This command is coded in Lua.
 %    \begin{macrocode}
 \NewDocumentCommand{\arbmark}{O{} m}{%
   \bgroup%
diff --git a/arabluatex.lua b/arabluatex.lua
index 8bb9572..f717cb4 100644
--- a/arabluatex.lua
+++ b/arabluatex.lua
@@ -805,7 +805,7 @@ function al_closestream()
    local t = f:read("*a")
    t = string.gsub(t, "\\arabicfont{}", "")
    t = string.gsub(t, "\\par ", "\n\n")
-   t = string.gsub(t, "(\\@al@ob%s?)", "{")
+   t = string.gsub(t, "(\\@al@ob)", "{")
    t = string.gsub(t, "(\\@al@cb@sp)", "} ")
    t = string.gsub(t, "(\\@al@cb)(%s?)", "}")
    t = gsub(t, lpeg.Cs("\\begin") * spcenc^-1 * bcbraces * cmdargs, "\n%1%2%3\n")
@@ -817,6 +817,7 @@ function al_closestream()
    t = string.gsub(t, "(\\end%s?)(%b{})", "%1%2\n")
    t = string.gsub(t, "([^\n]%s-)(\\end)%s?(%b{})", "%1\n%2%3")
    t = string.gsub(t, "\n\n\n", "\n\n")
+   t = string.gsub(t, "(\\txarb%s?%{)(\\txarb%s?%b{})(%})", "%2")
    if string.find(t, "\\begin%s?{document}.-\\arb%s?[%[%{]") or
       string.find(t, "\\begin%s?{document}.-\\[Uu]c%s?%b{}")
    then      
-- 
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