From: Ben Harris <bjh21@bjh21.me.uk>
Date: Tue, 30 Apr 2024 21:59:36 +0000 (+0100)
Subject: Quine corners
X-Git-Tag: bedstead-002.005~30
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~bjharris/git?a=commitdiff_plain;h=975e2a1fc710c48fb4527e23acd49649a87de51b;p=bedstead.git

Quine corners

One of these is used by BQN, but obviously if I'm going to have one I
should have all four.

According to Unicode document L2/07-004, "Proposal to add Medievalist
and Iranianist punctuation characters to the UCS", "The ideally formed
QUINE CORNER (U+231C-U+231F) has equal-length sides and sit at cap
height and on the baseline".  I've tried to implement that here.
---

diff --git a/bedstead.c b/bedstead.c
index 731bc1d..f66c957 100644
--- a/bedstead.c
+++ b/bedstead.c
@@ -1451,6 +1451,10 @@ static struct glyph {
  {{010,010,010,010,010,010,016,000,000}, U(230A) }, /* left floor */
  {{002,002,002,002,002,002,016,000,000}, U(230B) }, /* right floor */
  {{000,000,037,020,020,000,000,000,000}, 0x2310, "revlogicalnot" },
+ {{037,020,020,020,020,000,000,000,000}, U(231C) }, /* top left corner */
+ {{037,001,001,001,001,000,000,000,000}, U(231D) }, /* top right corner */
+ {{000,000,020,020,020,020,037,000,000}, U(231E) }, /* bottom left corner */
+ {{000,000,001,001,001,001,037,000,000}, U(231F) }, /* bottom right corner */
  {{000,000,002,005,004,004,004,004,004}, 0x2320, "integraltp" },
  {{004,004,004,004,004,024,010,000,000}, 0x2321, "integralbt" },
  {{000,037,004,004,004,037,000,000,000}, U(2336) }, /* APL I-beam */