support the highly surprising escape sequence \# (line continuation

with comment); used for example by gropdf(1)

1 files changed, 6 insertions, 0 deletions

diff --git a/roff.7 b/roff.7
index 7d9a7f3e..12455f8d 100644
--- a/roff.7
+++ b/roff.7
@@ -1819,6 +1819,12 @@ is an unpaddable space-sized non-breaking space character; see
 .Ss \e\(dq
 The rest of the input line is treated as
 .Sx Comments .
+.Ss \e#
+Line continuation with comment.
+Discard the rest of the physical input line and continue the logical
+input line on the next physical input line, joining the text on
+both lines together as if it were on a single input line.
+This is a groff extension.
 .Ss \e%
 Hyphenation allowed at this point of the word; ignored by
 .Xr mandoc 1 .