Rudimentary implementation of the roff(7) .while request.

Needed for example by groff_hdtbl(7).

There are two limitations:
It does not support nested .while requests yet,
and each .while loop must start and end in the same scope.

The roff_parseln() return codes are now more flexible
and allow OR'ing options.

1 files changed, 14 insertions, 0 deletions

diff --git a/regress/usr.bin/mandoc/roff/while/badargs.in b/regress/usr.bin/mandoc/roff/while/badargs.in
new file mode 100644
index 00000000000..bbbd7cd056a
--- /dev/null
+++ b/regress/usr.bin/mandoc/roff/while/badargs.in
@@ -0,0 +1,14 @@
+.\" $OpenBSD: badargs.in,v 1.1 2018/08/24 22:56:37 schwarze Exp $
+.Dd $Mdocdate: August 24 2018 $
+.Dt WHILE-BADARGS 1
+.Os
+.Sh NAME
+.Nm while-badargs
+.Nd dubious arguments for the while request
+.Sh DESCRIPTION
+while does not support next line scope:
+.nr cnt 2 1
+.while \n-[cnt]
+\n[cnt]
+.Pp
+final text