1 files changed, 10 insertions, 6 deletions

diff --git a/arabluatex.lua b/arabluatex.lua
index b99fbca..f6110f9 100644
--- a/arabluatex.lua
+++ b/arabluatex.lua
@@ -53,12 +53,15 @@ local function unprotectarb(str)
 return str
 end
 
--- 'albrkcmds' is what is set by default.  'brkcmds' is what may be
--- set in the preamble as argument of \MkArbBreak{}
+-- commands the arguments of which must not be processed by
+-- arabluatex.  'albrkcmds' is what is set by default.  'brkcmds' is
+-- what may be set in the preamble as argument of \MkArbBreak{}
 local albrkcmds = {
    "Footnote",
    "Marginpar",
    "edtext",
+   "pstart",
+   "pend",
    "arbmark"
 }
 local brkcmds = {}
@@ -79,20 +82,21 @@ end
 local dblbkslash = lpeg.Cs("\\")
 local bsqbrackets = lpeg.Cs{ "[" * ((1 - lpeg.S"[]") + lpeg.V(1))^0 * "]" }
 local bcbraces = lpeg.Cs{ "{" * ((1 - lpeg.S"{}") + lpeg.V(1))^0 * "}" }
-local spce = lpeg.P(" ")
+local spce = lpeg.Cs(" ")
 local bsqbracketsii = lpeg.Cs(bsqbrackets^-2)
-local bcbracesii = lpeg.Cs(bcbraces * bcbraces^-1)
+local bcbracesii = lpeg.Cs(bcbraces^-2)
+local cmdargs = lpeg.Cs(spce * bsqbracketsii * bcbracesii)
 
 local function breakcmd(str)
       for i = 1,#albrkcmds do
-         str = gsub(str, dblbkslash * lpeg.Cs(albrkcmds[i]) * spce^-1 * bsqbracketsii * bcbracesii, "}%1%2%3%4\\arb{")
+         str = gsub(str, dblbkslash * lpeg.Cs(albrkcmds[i]) * cmdargs, "}%1%2%3\\arb{")
       end
    -- user commands
    if next(brkcmds) == nil then
       -- nothing to do
    else
       for i = 1,#brkcmds do
-         str = gsub(str, dblbkslash * lpeg.Cs(brkcmds[i]) * spce^-1 * bsqbracketsii * bcbracesii, "}%1%2%3%4\\arb{")
+         str = gsub(str, dblbkslash * lpeg.Cs(brkcmds[i]) * cmdargs, "}%1%2%3\\arb{")
       end
    end
    -- process \item[], then \item