A regexp example was rendered as

foo\d
when it was clearly intended to render as
    foo$
Fred, is this a right way to fix it?  If not, the earlier place in the
same paragraph that does render as
    foo$
is also wrong.

Doc/lib/libre.tex

@@ -101,7 +101,7 @@ specified, this matches any character including a newline.
 newline at the end of the string, and in \constant{MULTILINE} mode
 also matches before a newline.  \regexp{foo} matches both 'foo' and
 'foobar', while the regular expression \regexp{foo\$} matches only
-'foo'.  More interestingly, searching for \regexp{foo\e d} in
+'foo'.  More interestingly, searching for \regexp{foo\$} in
 'foo1\textbackslash nfoo2\textbackslash n' matches 'foo2' normally,
 but 'foo1' in \constant{MULTILINE} mode.