Use VT100 "medium shade" character rather than the replacement character

andy.koppe · andy.koppe · commit 90c11d326682 · 2009-08-31T19:14:22.000Z
0xFFFD for errors again, so as to distinguish them from holes in the 
font.
diff --git a/termout.c b/termout.c
@@ -374,9 +374,9 @@ write_char(wchar c, int width)
 static void
 write_error(void)
 {
-  // Write the Unicode "replacement character", which usually shows as an
-  // empty box or some sort of question mark.
-  write_char(0xFFFD, 1);
+  // Write 'Medium Shade' character from vt100 linedraw set,
+  // which looks appropriately erroneous.
+  write_char(0x2592, 1);
 }
 
 static void

Original file line number	Diff line number	Diff line change
`@@ -374,9 +374,9 @@ write_char(wchar c, int width)`
`374`	`374`	`static void`
`375`	`375`	`write_error(void)`
`376`	`376`	`{`
`377`		`- // Write the Unicode "replacement character", which usually shows as an`
`378`		`- // empty box or some sort of question mark.`
`379`		`- write_char(0xFFFD, 1);`
	`377`	`+ // Write 'Medium Shade' character from vt100 linedraw set,`
	`378`	`+ // which looks appropriately erroneous.`
	`379`	`+ write_char(0x2592, 1);`
`380`	`380`	`}`
`381`	`381`
`382`	`382`	`static void`