Improve ASCII rendering of a few rare character escape sequences

that can be changed unilaterally because groff fails to render them
at all.

3 files changed, 13 insertions, 13 deletions

diff --git a/chars.c b/chars.c
index 508612fb..71811c36 100644
--- a/chars.c
+++ b/chars.c
@@ -215,9 +215,9 @@ static struct ln lines[] = {
 	{ "mo",			"<element\037of>", 0x2208 },
 	{ "nm",			"<not\037element\037of>", 0x2209 },
 	{ "sb",			"<proper\037subset>", 0x2282 },
-	{ "nb",			"(!=",		0x2284	},
+	{ "nb",			"<not\037subset>", 0x2284 },
 	{ "sp",			"<proper\037superset>", 0x2283 },
-	{ "nc",			"!=)",		0x2285	},
+	{ "nc",			"<not\037superset>", 0x2285 },
 	{ "ib",			"<subset\037or\037equal>", 0x2286 },
 	{ "ip",			"<superset\037or\037equal>", 0x2287 },
 	{ "ca",			"<intersection>", 0x2229 },
@@ -225,13 +225,13 @@ static struct ln lines[] = {
 	{ "/_",			"<angle>",	0x2220	},
 	{ "pp",			"<perpendicular>", 0x22a5 },
 	{ "is",			"<integral>",	0x222b	},
-	{ "integral",		"'\b,\bI",	0x222b	},
-	{ "sum",		"E",		0x2211	},
-	{ "product",		"TT",		0x220f	},
-	{ "coproduct",		"U",		0x2210	},
+	{ "integral",		"<integral>",	0x222b	},
+	{ "sum",		"<sum>",	0x2211	},
+	{ "product",		"<product>",	0x220f	},
+	{ "coproduct",		"<coproduct>",	0x2210	},
 	{ "gr",			"<nabla>",	0x2207	},
 	{ "sr",			"<sqrt>",	0x221a	},
-	{ "sqrt",		"\\/",		0x221a	},
+	{ "sqrt",		"<sqrt>",	0x221a	},
 	{ "lc",			"|~",		0x2308	},
 	{ "rc",			"~|",		0x2309	},
 	{ "lf",			"|_",		0x230a	},
diff --git a/regress/char/unicode/namediff.out_ascii b/regress/char/unicode/namediff.out_ascii
index 8e309636..456f9ad6 100644
--- a/regress/char/unicode/namediff.out_ascii
+++ b/regress/char/unicode/namediff.out_ascii
@@ -14,11 +14,11 @@ DDEESSCCRRIIPPTTIIOONN
        PP SCRIPT CAPITAL P
        ^v^v UP DOWN ARROW
        ^=v^=v UP DOWN DOUBLE ARROW
-       TTTT N-ARY PRODUCT
-       UU N-ARY COPRODUCT
-       EE N-ARY SUMMATION
-       (!=(!= NOT A SUBSET OF
-       !=)!=) NOT A SUPERSET OF
+       <product><product> N-ARY PRODUCT
+       <coproduct><coproduct> N-ARY COPRODUCT
+       <sum><sum> N-ARY SUMMATION
+       <not subset><not subset> NOT A SUBSET OF
+       <not superset><not superset> NOT A SUPERSET OF
        // LEFT PARENTHESIS UPPER HOOK
        || LEFT PARENTHESIS EXTENSION
        \\ LEFT PARENTHESIS LOWER HOOK
diff --git a/regress/eqn/fromto/basic.out_ascii b/regress/eqn/fromto/basic.out_ascii
index 86697c94..68ae5699 100644
--- a/regress/eqn/fromto/basic.out_ascii
+++ b/regress/eqn/fromto/basic.out_ascii
@@ -4,6 +4,6 @@ NNAAMMEE
      ffrroommttoo--bbaassiicc - vertical stacking
 
 DDEESSCCRRIIPPTTIIOONN
-     initial text E_(_i = 1)^<infinity> 1/(_i^2) final text
+     initial text <sum>_(_i = 1)^<infinity> 1/(_i^2) final text
 
 OpenBSD                          July 4, 2017                          OpenBSD