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Date: Fri, 23 Jan 2015 15:19:10 -0500 (EST)
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From: schwarze@mdocml.bsd.lv
To: source@mdocml.bsd.lv
Subject: mdocml: While ignoring the .ta (set tab stops) and .ti (temp indent) 
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Log Message:
-----------
While ignoring the .ta (set tab stops) and .ti (temp indent) requests
is sometimes harmless, it often causes seriously ugly output,
so flag these requests as unsupported rather than ignoring them.
Discussed with naddy@.

Modified Files:
--------------
    mdocml:
        roff.7
        roff.c

Revision Data
-------------
Index: roff.c
===================================================================
RCS file: /home/cvs/mdocml/mdocml/roff.c,v
retrieving revision 1.254
retrieving revision 1.255
diff -Lroff.c -Lroff.c -u -p -r1.254 -r1.255
--- roff.c
+++ roff.c
@@ -608,7 +608,7 @@ static	struct roffmac	 roffs[ROFF_MAX] =
 	{ "po", roff_line_ignore, NULL, NULL, 0, NULL },
 	{ "ps", roff_line_ignore, NULL, NULL, 0, NULL },
 	{ "psbb", roff_unsupp, NULL, NULL, 0, NULL },
-	{ "pshape", roff_line_ignore, NULL, NULL, 0, NULL },
+	{ "pshape", roff_unsupp, NULL, NULL, 0, NULL },
 	{ "pso", roff_insec, NULL, NULL, 0, NULL },
 	{ "ptr", roff_line_ignore, NULL, NULL, 0, NULL },
 	{ "pvs", roff_line_ignore, NULL, NULL, 0, NULL },
@@ -640,11 +640,11 @@ static	struct roffmac	 roffs[ROFF_MAX] =
 	{ "sv", roff_line_ignore, NULL, NULL, 0, NULL },
 	{ "sy", roff_insec, NULL, NULL, 0, NULL },
 	{ "T&", roff_T_, NULL, NULL, 0, NULL },
-	{ "ta", roff_line_ignore, NULL, NULL, 0, NULL },
+	{ "ta", roff_unsupp, NULL, NULL, 0, NULL },
 	{ "tc", roff_unsupp, NULL, NULL, 0, NULL },
 	{ "TE", roff_TE, NULL, NULL, 0, NULL },
 	{ "TH", roff_TH, NULL, NULL, 0, NULL },
-	{ "ti", roff_line_ignore, NULL, NULL, 0, NULL },
+	{ "ti", roff_unsupp, NULL, NULL, 0, NULL },
 	{ "tkf", roff_line_ignore, NULL, NULL, 0, NULL },
 	{ "tl", roff_unsupp, NULL, NULL, 0, NULL },
 	{ "tm", roff_line_ignore, NULL, NULL, 0, NULL },
Index: roff.7
===================================================================
RCS file: /home/cvs/mdocml/mdocml/roff.7,v
retrieving revision 1.67
retrieving revision 1.68
diff -Lroff.7 -Lroff.7 -u -p -r1.67 -r1.68
--- roff.7
+++ roff.7
@@ -1439,7 +1439,7 @@ Retrieve the bounding box of a PostScrip
 Currently unsupported.
 .Ss \&pshape
 Set a special shape for the current paragraph.
-This is a Heirloom extension and currently ignored.
+This is a Heirloom extension and currently unsupported.
 .Ss \&pso
 Include output of a shell command.
 Ignored because insecure.
@@ -1572,7 +1572,7 @@ See
 .Ss \&ta
 Set tab stops.
 Takes an arbitrary number of arguments.
-Currently ignored.
+Currently unsupported.
 .Ss \&tc
 Change tab repetion character.
 Currently unsupported.
@@ -1582,7 +1582,7 @@ See
 .Sx \&TS .
 .Ss \&ti
 Temporary indent.
-Currently ignored.
+Currently unsupported.
 .Ss \&tkf
 Enable track kerning for a font.
 Currently ignored.
@@ -1720,7 +1720,7 @@ Each number may be followed by one optio
 The following equations hold:
 .Bd -literal -offset indent
 1i = 6v = 6P = 10m = 10n = 72p = 1000M = 240u = 240
-254c = 100i = 24000u = 24000 
+254c = 100i = 24000u = 24000
 1f = 65536u = 65536
 .Ed
 .Pp
--
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