When all cells in a tbl(1) column are empty, set the column width

to 1n rather than to 0n, in the same way as groff does.
This fixes misformatting reported by bentley@ in xkeyboard-config(7).

1 files changed, 46 insertions, 0 deletions

diff --git a/regress/tbl/layout/emptycol.out_ascii b/regress/tbl/layout/emptycol.out_ascii
new file mode 100644
index 00000000..b1372b7b
--- /dev/null
+++ b/regress/tbl/layout/emptycol.out_ascii
@@ -0,0 +1,46 @@
+TBL-LAYOUT-EMPTYCOL(1)      General Commands Manual     TBL-LAYOUT-EMPTYCOL(1)
+
+
+
+NNAAMMEE
+       tbl-layout-emptycol - empty columns in tables
+
+DDEESSCCRRIIPPTTIIOONN
+       missing final column:
+
+       +--+---+---+
+       |1 | 2 |   |
+       +--+---+---+
+       |a | b |   |
+       +--+---+---+
+       empty final column:
+
+       +--+---+---+
+       |1 | 2 |   |
+       +--+---+---+
+       |a | b |   |
+       +--+---+---+
+       final column with zero-width content:
+
+       +--+---+---+
+       |1 | 2 |   |
+       +--+---+---+
+       |a | b |   |
+       +--+---+---+
+       empty middle column:
+
+       +--+---+---+
+       |1 |   | 3 |
+       +--+---+---+
+       |a |   |   |
+       +--+---+---+
+       span crossing empty middle column:
+
+       +--+---+---+
+       |1 |   | 3 |
+       +--+---+---+
+       |span      |
+       +----------+
+
+
+OpenBSD                        December 31, 2019        TBL-LAYOUT-EMPTYCOL(1)