[b8e82d293b] Restrict the options of [binary encode uuencode] to values that

will not prevent ability of [binary decode uuencode] to decode the result.

1 files changed, 13 insertions, 9 deletions

diff --git a/doc/binary.n b/doc/binary.n
index 1f93c03..92a939a 100644
--- a/doc/binary.n
+++ b/doc/binary.n
@@ -110,23 +110,27 @@ produce files that other implementations of decoders cannot process):
 .TP
 \fB\-maxlen \fIlength\fR
 .
-Indicates that the output should be split into lines of no more than
-\fIlength\fR characters. By default, lines are split every 61 characters, and
-this must be in the range 3 to 85 due to limitations in the encoding.
+Indicates the maximum number of characters to produce for each encoded line.
+The valid range is 5 to 85. Line lengths outside that range cannot be
+accommodated by the encoding format. The default value is 61.
 .TP
 \fB\-wrapchar \fIcharacter\fR
 .
-Indicates that, when lines are split because of the \fB\-maxlen\fR option,
-\fIcharacter\fR should be used to separate lines. By default, this is a
-newline character,
-.QW \en .
+Indicates the character(s) to use to mark the end of each encoded line.
+Acceptable values are a sequence of zero or more characters from the
+set { \\x09 (TAB), \\x0B (VT), \\x0C (FF), \\x0D (CR) } followed
+by zero or one newline \\x0A (LF).  Any other values are rejected because
+they would generate encoded text that could not be decoded. The default value
+is a single newline.
 .PP
 During decoding, the following options are supported:
 .TP
 \fB\-strict\fR
 .
-Instructs the decoder to throw an error if it encounters unexpected
-whitespace characters.  Otherwise it ignores them.
+Instructs the decoder to throw an error if it encounters anything
+outside of the standard encoding format. Without this option, the
+decoder tolerates some deviations, mostly to forgive reflows of lines
+between the encoder and decoder.
 .PP
 Note that neither the encoder nor the decoder handle the header and footer of
 the uuencode format.