From: schwarze@mdocml.bsd.lv
To: source@mdocml.bsd.lv
Subject: mdocml: stricter parsing of Unicode escape names
Date: Tue, 28 Oct 2014 10:06:31 -0400 (EDT) [thread overview]
Message-ID: <201410281406.s9SE6V0a021917@krisdoz.my.domain> (raw)
Log Message:
-----------
stricter parsing of Unicode escape names
Modified Files:
--------------
mdocml:
mandoc_escape.3
Revision Data
-------------
Index: mandoc_escape.3
===================================================================
RCS file: /usr/vhosts/mdocml.bsd.lv/cvs/mdocml/mandoc_escape.3,v
retrieving revision 1.1
retrieving revision 1.2
diff -Lmandoc_escape.3 -Lmandoc_escape.3 -u -p -r1.1 -r1.2
--- mandoc_escape.3
+++ mandoc_escape.3
@@ -197,15 +197,9 @@ form, directly follows the initial backs
Note that the one-character argument short form can only be used for
argument characters that do not clash with escape sequence identifiers.
.Pp
-If the argument consists of more than one character
-and starts with the character
-.Sq u ,
-.Dv ESCAPE_UNICODE
-is returned as described below.
-If the argument is just the single character
-.Sq u ,
-.Dv ESCAPE_ERROR
-is returned.
+If the argument matches one of the forms described below under
+.Dv ESCAPE_UNICODE ,
+that value is returned instead.
.Pp
The
.Dv ESCAPE_SPECIAL
@@ -219,17 +213,27 @@ manual.
.It Dv ESCAPE_UNICODE
Escape sequences of the same format as described above under
.Dv ESCAPE_SPECIAL ,
-but with an argument starting with the character
-.Sq u :
+but with an argument of the forms
+.Ic u Ns Ar XXXX ,
+.Ic u Ns Ar YXXXX ,
+or
+.Ic u10 Ns Ar XXXX
+where
+.Ar X
+and
+.Ar Y
+are hexadecimal digits and
+.Ar Y
+is not zero:
.Ic \eC'u , \e[u .
As a special exception,
.Fa start
is set to the character after the
-.Sq u ,
+.Ic u ,
and the
.Fa sz
return value does not include the
-.Sq u
+.Ic u
either.
.Pp
Such Unicode character escape sequences can be rendered using the function
--
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