1 files changed, 13 insertions, 7 deletions
diff --git a/macros/latex/contrib/l3kernel/l3text.dtx b/macros/latex/contrib/l3kernel/l3text.dtx
index c230ab9f27..0d1365c8d2 100644
--- a/macros/latex/contrib/l3kernel/l3text.dtx
+++ b/macros/latex/contrib/l3kernel/l3text.dtx
@@ -43,7 +43,7 @@
 %    }^^A
 % }
 %
-% \date{Released 2022-02-21}
+% \date{Released 2022-02-24}
 %
 % \maketitle
 %
@@ -249,11 +249,13 @@
 % \end{variable}
 %
 % \begin{variable}{\l_text_case_exclude_arg_tl}
-%   Lists commands which are excluded from case changing.
+%   Lists commands which are excluded from case changing. This protection
+%   includes everything up to and including their first braced argument.
 % \end{variable}
 %
 % \begin{variable}{\l_text_expand_exclude_tl}
-%   Lists commands which are excluded from expansion.
+%   Lists commands which are excluded from expansion. This protection
+%   includes everything up to and including their first braced argument.
 % \end{variable}
 %
 % \begin{variable}{\l_text_titlecase_check_letter_bool}
@@ -624,7 +626,8 @@
 %   }
 % \begin{macro}[EXP]{\@@_expand_exclude:nN}
 % \begin{macro}[EXP]{\@@_expand_exclude:NN}
-% \begin{macro}[EXP]{\@@_expand_exclude:Nn}
+% \begin{macro}[EXP]{\@@_expand_exclude:Nw}
+% \begin{macro}[EXP]{\@@_expand_exclude:Nnn}
 % \begin{macro}[EXP]{\@@_expand_accent:N}
 % \begin{macro}[EXP]{\@@_expand_accent:NN}
 % \begin{macro}[EXP]{\@@_expand_letterlike:N}
@@ -883,13 +886,15 @@
     \str_if_eq:nnTF {#1} {#2}
       {
         \@@_use_i_delimit_by_q_recursion_stop:nw
-          { \@@_expand_exclude:Nn #1 }
+          { \@@_expand_exclude:Nw #1 }
       }
       { \@@_expand_exclude:NN #1 }
   }
-\cs_new:Npn \@@_expand_exclude:Nn #1#2
+\cs_new:Npn \@@_expand_exclude:Nw #1#2#
+  { \@@_expand_exclude:Nnn #1 {#2} }
+\cs_new:Npn \@@_expand_exclude:Nnn #1#2#3
   {
-    \@@_expand_store:n { #1 {#2} }
+    \@@_expand_store:n { #1#2 {#3} }
     \@@_expand_loop:w
   }
 %    \end{macrocode}
@@ -1116,6 +1121,7 @@
 % \end{macro}
 % \end{macro}
 % \end{macro}
+% \end{macro}
 %
 % \begin{macro}
 %   {