From 0a8809aa2eea4b189b4ca02bea4883d7cf4ce706 Mon Sep 17 00:00:00 2001 From: Ingo Schwarze Date: Fri, 24 Aug 2018 23:12:33 +0000 Subject: 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. --- roff.7 | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) (limited to 'roff.7') diff --git a/roff.7 b/roff.7 index c78edfd1..e64cc112 100644 --- a/roff.7 +++ b/roff.7 @@ -1,4 +1,4 @@ -.\" $Id: roff.7,v 1.103 2018/08/23 14:29:38 schwarze Exp $ +.\" $Id: roff.7,v 1.104 2018/08/24 23:12:33 schwarze Exp $ .\" .\" Copyright (c) 2010, 2011, 2012 Kristaps Dzonsons .\" Copyright (c) 2010-2018 Ingo Schwarze @@ -15,7 +15,7 @@ .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. .\" -.Dd $Mdocdate: August 23 2018 $ +.Dd $Mdocdate: August 24 2018 $ .Dt ROFF 7 .Os .Sh NAME @@ -1202,7 +1202,7 @@ While evaluating the the unit suffixes described below .Sx Scaling Widths are ignored. -.It Ic \&it Ar expression macro +.It Ic \&itc Ar expression macro Set an input line trap, not counting lines ending with \ec. Currently unsupported. .It Ic \&IX Ar class keystring @@ -1715,8 +1715,12 @@ This is a Heirloom extension and currently ignored. Set a page location trap. Currently unsupported. .It Ic \&while Ar condition body -Repeated execution while a condition is true. -Currently unsupported. +Repeated execution while a +.Ar condition +is true, with syntax similar to +.Ic \&if . +Currently implemented with two restrictions: cannot nest, +and each loop must start and end in the same scope. .It Ic \&write Oo \(dq Oc Ns Ar string Write to an open file. Ignored because insecure. @@ -2149,10 +2153,6 @@ macro control character does not suppress output line breaks. .It Diversions are not implemented, and support for traps is very incomplete. -.It -While recursion is supported, -.Sx \&while -loops are not. .El .Pp The special semantics of the -- cgit v1.2.3-56-ge451