# HG changeset patch
# User Franz Glasner <fzglas.hg@dom66.de>
# Date 1778680646 -7200
# Node ID f20177032d2116aff6274b09a1b0b2df2659251d
# Parent  de7118d299e9068751058cd48b2f22b3b177457f
A chapter about escaping rules

diff -r de7118d299e9 -r f20177032d21 docs/lexer-algpseudocode.rst
--- a/docs/lexer-algpseudocode.rst	Wed May 13 15:56:58 2026 +0200
+++ b/docs/lexer-algpseudocode.rst	Wed May 13 15:57:26 2026 +0200
@@ -252,11 +252,10 @@
   * Parameters are separated from the keyword/command by a (possibly empty) run
     of space or TAB characters.
     This is true for required and optional parameters.
-
-    .. todo:: Escaping
+- Unrecognized commands typically result in a
+  :py:class:`pygments.token.Token.Error` token.
 
-              A single backslash yields a Generic.Error token when in
-              `default` and `expression` states.
+More on escaping rules you can find in :ref:`this chapter <escaping-rules>`.
 
 
 Commands With Required Parameters
@@ -491,6 +490,33 @@
 .. note:: Explicit token types are **case-sensitive**.
 
 
+.. _escaping-rules:
+
+Escaping Rules
+==============
+
+The escape character is a backslash ``\``.
+
+A backslash can be escaped with ``\\`` and yields a single backslash token.
+
+Within parameters a closing curly brace ``}`` ends the current
+parameters environment.
+It must be escaped using ``\}`` if a closing curly brace is part of the
+argument content.
+
+A single backslash yields a :py:class:`pygments.token.Token.Generic.Error`
+token when in `default` and `expression` states.
+Contrary---in `text` contexts a single backslash character that does not
+introduce a command yields a normal text token.
+
+In all contexts a backslash that would normally introduce a known command
+must be escaped if the content should not recognized as a command.
+
+Single- and double-quotes must be escaped also (``\"`` or ``\'``) in
+`default` and `expression` contexts when they should not introduce a
+string token.
+
+
 .. _customized-sphinx-lexers:
 
 Customized Lexers in Sphinx