Removed stipulation that an empty `Bd -offset' will default to 6n. Not

sure where this came about.  Added regression tests to convince myself
that this is so.  Also consolidated COMPATIBILITY notes regarding `Bd'.
Added COMPATIBILITY note to the effect that old groff pukes on `Bd
-compact -ragged' (regression test will fail on old groff).

3 files changed, 66 insertions, 0 deletions

diff --git a/regress/mdoc/Bd/bd-compact.in b/regress/mdoc/Bd/bd-compact.in
new file mode 100644
index 00000000..a6cf21db
--- /dev/null
+++ b/regress/mdoc/Bd/bd-compact.in
@@ -0,0 +1,33 @@
+.Dd $Mdocdate$
+.Dt FOO 1
+.Os
+.Sh NAME
+.Nm foo
+.Nd bar
+.Sh DESCRIPTION
+1
+.Bd -literal -compact
+a b
+c d
+.Ed
+2
+1
+.Bd -filled -compact
+a b
+c d
+.Ed
+2
+3
+.\" NOTE: OLD GROFF WILL PUKE HERE, AS IT BUGGILY FORGETS TO EMIT A
+.\" NEWLINE BEFORE THE DISPLAY.
+.Bd -ragged -compact
+a b
+c d
+.Ed
+2
+1
+.Bd -unfilled -compact
+a b
+c d
+.Ed
+2
diff --git a/regress/mdoc/Bd/bd-empty-offset.in b/regress/mdoc/Bd/bd-empty-offset.in
new file mode 100644
index 00000000..1bb6126c
--- /dev/null
+++ b/regress/mdoc/Bd/bd-empty-offset.in
@@ -0,0 +1,31 @@
+.Dd $Mdocdate$
+.Dt FOO 1
+.Os
+.Sh NAME
+.Nm foo
+.Nd bar
+.Sh DESCRIPTION
+1
+.Bd -literal -offset
+a b
+c d
+.Ed
+2
+1
+.Bd -filled -offset
+a b
+c d
+.Ed
+2
+1
+.Bd -ragged -offset
+a b
+c d
+.Ed
+2
+1
+.Bd -unfilled -offset
+a b
+c d
+.Ed
+2
diff --git a/regress/mdoc/Cd/cd.in b/regress/mdoc/Cd/cd.in
index 82e6b0a8..d966aa45 100644
--- a/regress/mdoc/Cd/cd.in
+++ b/regress/mdoc/Cd/cd.in
@@ -9,6 +9,8 @@
 .Cd "it* at isa? port 0x2e"
 .Cd "it* at isa? port 0x2e"
 .Sh DESCRIPTION
+.\" OLD GROFF WILL PUKE ON THIS PART, RENDERING IT JUST AS IT WAS
+.\" RENDERED IN THE SYNOPSIS.
 .Cd "it* at isa? port 0x2e"
 .Cd "it* at isa? port 0x2e"
 .Cd "it* at isa? port 0x2e"