From c56c17992552256b55134ead16c3e16164fd2e67 Mon Sep 17 00:00:00 2001 From: Ingo Schwarze Date: Thu, 23 Aug 2018 14:29:38 +0000 Subject: Implement the roff(7) .shift and .return requests, for example used by groff_hdtbl(7) and groff_mom(7). Also correctly interpolate arguments during nested macro execution even after .shift and .return, implemented using a stack of argument arrays. Note that only read.c, but not roff.c can detect the end of a macro execution, and the existence of .shift implies that arguments cannot be interpolated up front, so unfortunately, this includes a partial revert of roff.c rev. 1.337, moving argument interpolation back into the function roff_res(). --- regress/roff/shift/basic.in | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 regress/roff/shift/basic.in (limited to 'regress/roff/shift/basic.in') diff --git a/regress/roff/shift/basic.in b/regress/roff/shift/basic.in new file mode 100644 index 00000000..982042db --- /dev/null +++ b/regress/roff/shift/basic.in @@ -0,0 +1,35 @@ +.\" $OpenBSD: basic.in,v 1.1 2018/08/23 14:16:12 schwarze Exp $ +.TH SHIFT_BASIC 1 "August 23, 2018" +.SH NAME +.B shift-basic +\(en the shift request +.SH DESCRIPTION +.de showargs +original arguments: +.BI \\$@ +.PP +.shift 2 +after shift 2: +.BI \\$@ +.PP +.shift +after shift without argument: +.BI \\$@ +.PP +.shift 0 +after shift 0: +.BI \\$@ +.. +.de useargs +<\\$*> +.. +.showargs one two three four five +.PP +expand to less than three bytes: +.useargs 1 +.PP +expand to exactly three bytes: +.useargs x y +.PP +expand to more than three bytes: +.useargs "a longer argument..." "and another" -- cgit v1.2.3-56-ge451