diff -riwBu -Xex dtl\dt2dv.c dtl-modified\dt2dv.c
--- dtl\dt2dv.c	Wed Mar 08 01:00:00 1995
+++ dtl-modified\dt2dv.c	Mon Oct 02 13:28:35 2006
@@ -1,9 +1,11 @@
 /* dt2dv - convert human-readable "DTL" file to DVI format
          - this is intended to invert dv2dt version 0.6.0
-   - version 0.6.1 - 14:38 GMT +11  Thu 9 March 1995
+   - version 0.6.2 - 27 July 2005
    - Geoffrey Tobin    G.Tobin@ee.latrobe.edu.au
    - fixes:  Michal Tomczak-Jaegermann    ntomczak@vm.ucs.ualberta.ca
              Nelson H. F. Beebe    beebe@math.utah.edu
+	     Angus Leeming leeming@lyx.org: Enable dt2dv to handle
+	     .dvi files containing strings longer than 1024 chars.
    - Reference:  "The DVI Driver Standard, Level 0",
                  by  The TUG DVI Driver Standards Committee.
                  Appendix A, "Device-Independent File Format".
@@ -34,7 +36,7 @@
   size_t max;   /* capacity of buf */
   S4 wrote;     /* number of characters written into buf */
   size_t read;  /* position in buf of next character to read from buf */
-  char * buf;   /* line buffer */
+  unsigned char * buf;   /* line buffer */
 } Line;
 
 char linebuf[MAXLINE+1];
@@ -1089,7 +1091,7 @@
       dinfo();
       status = 0;
     }
-    else if ( ! isprint (c) && ! isspace (c))
+    else if ( ! isprint (c & 0x7f) && ! isspace (c))
     {
       PRINT_PROGNAME;
       fprintf (stderr,
@@ -2223,7 +2225,7 @@
 /* transfer (length and) quoted string from dtl to dvi file, */
 /* return number of bytes written to dvi file. */
 {
-  U4 k, k2;
+  U4 k, k2, lstr_maxsize;
   Lstring lstr;
 
   if (debug)
@@ -2232,12 +2234,13 @@
     fprintf (stderr, "(xfer_len_string) : entering xfer_len_string.\n");
   }
 
-  init_Lstring (&lstr, LSIZE);
-
   /* k[n] : length of special string */
 
   k = get_unsigned (dtl);
 
+  lstr_maxsize = (k > LSIZE) ? k : LSIZE;
+  init_Lstring (&lstr, lstr_maxsize);
+
   if (debug)
   {
     PRINT_PROGNAME;
@@ -2567,7 +2570,7 @@
 #ifdef HEX_CHECKSUM
   /* c[4] : (hexadecimal) checksum : I (gt) would prefer this */
   xfer_hex (4, dtl, dvi);
-#else /NOT HEX_CHECKSUM */
+#else /*NOT HEX_CHECKSUM */
   /* c[4] : checksum (octal, for comparison with tftopl's .pl file) */
   xfer_oct (4, dtl, dvi);
 #endif
diff -riwBu -Xex dtl\Makefile dtl-modified\Makefile
--- dtl\Makefile	Tue Sep 19 23:59:17 2006
+++ dtl-modified\Makefile	Wed Jul 05 17:54:20 2006
@@ -3,6 +3,14 @@
 # Thu 9 March 1995
 # Geoffrey Tobin
 # Nelson H. F. Beebe
+#
+# Changes 27 July 2005 by Angus Leeming to enable the Makefile to
+# work out of the box on both *nix and Windows machines under
+# the MinSYS environment.
+#
+# The Makefile can also be used unaltered to build a Windows executable
+# from a Linux box if make is invoked as:
+# $ make EXEEXT='.exe' CC='i386-mingw32-gcc'
 #=======================================================================
 
 BINDIR          = /usr/local/bin
@@ -16,10 +24,22 @@
 CP              = /bin/cp
 DITROFF		= ditroff
 DITROFF		= groff
-EXES 		= dt2dv dv2dt
+
+# This is a GNU make extension.
+# If you're flavour of make refuses to accept it,
+# then simply hardcode EXEEXT.
+ifeq ($(WINDIR),)
+  EXEEXT =
+else
+  EXEEXT = .exe
+endif
+
+DT2DV		= dt2dv$(EXEEXT)
+DV2DT		= dv2dt$(EXEEXT)
+EXES 		= $(DT2DV) $(DV2DT)
 LDFLAGS         = -s
 LDFLAGS         =
-MAN2PS		= ./man2ps
+MAN2PS		= sh ./man2ps
 MANDIR		= /usr/local/man/man$(MANEXT)
 MANEXT		= 1
 OBJS            = dt2dv.o dv2dt.o
@@ -44,23 +64,24 @@
 
 #=======================================================================
 
-all:  dtl check doc
+#all:  dtl check doc
+all:  dtl check
 
 doc:  dt2dv.hlp dv2dt.hlp dt2dv.ps dv2dt.ps
 
-dtl:  $(EXES)
+dtl:  dv2dt dt2dv
 
 check tests:  hello example tripvdu edited
 
 dv2dt: dv2dt.o dtl.h
-	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $@.o
+	$(CC) $(CFLAGS) $(LDFLAGS) -o $(DV2DT) dv2dt.o
 
 dt2dv: dt2dv.o dtl.h
-	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $@.o
+	$(CC) $(CFLAGS) $(LDFLAGS) -o $(DT2DV) dt2dv.o
 
-hello:  hello.dtl $(EXES)
-	dt2dv hello.dtl hello2.dvi
-	dv2dt hello2.dvi hello2.dtl
+hello:  hello.dtl dv2dt dt2dv
+	./$(DT2DV) hello.dtl hello2.dvi
+	./$(DV2DT) hello2.dvi hello2.dtl
 	-@diff hello.dtl hello2.dtl > hello.dif
 	@if [ -s hello.dif ] ; \
 	then echo ERROR: differences in hello.dif ; \
@@ -69,11 +90,11 @@
 
 hello.dtl:  hello.tex
 	tex hello
-	dv2dt hello.dvi hello.dtl
+	./$(DV2DT) hello.dvi hello.dtl
 
-example:  example.dtl $(EXES)
-	dt2dv example.dtl example2.dvi
-	dv2dt example2.dvi example2.dtl
+example:  example.dtl dv2dt dt2dv
+	./$(DT2DV) example.dtl example2.dvi
+	./$(DV2DT) example2.dvi example2.dtl
 	-@diff example.dtl example2.dtl > example.dif
 	@if [ -s example.dif ] ; \
 	then echo ERROR: differences in example.dif ; \
@@ -82,11 +103,11 @@
 
 example.dtl:  example.tex
 	tex example
-	dv2dt example.dvi example.dtl
+	./$(DV2DT) example.dvi example.dtl
 
-tripvdu:  tripvdu.dtl $(EXES)
-	dt2dv tripvdu.dtl tripvdu2.dvi
-	dv2dt tripvdu2.dvi tripvdu2.dtl
+tripvdu:  tripvdu.dtl dv2dt dt2dv
+	./$(DT2DV) tripvdu.dtl tripvdu2.dvi
+	./$(DV2DT) tripvdu2.dvi tripvdu2.dtl
 	-@diff tripvdu.dtl tripvdu2.dtl > tripvdu.dif
 	@if [ -s tripvdu.dif ] ; \
 	then echo ERROR: differences in tripvdu.dif ; \
@@ -95,15 +116,15 @@
 
 tripvdu.dtl:  tripvdu.tex
 	tex tripvdu
-	dv2dt tripvdu.dvi tripvdu.dtl
+	./$(DV2DT) tripvdu.dvi tripvdu.dtl
 
 # edited.txt is already a dtl file.
 
-edited:  edited.txt $(EXES)
-	dt2dv edited.txt edited.dvi
-	dv2dt edited.dvi edited2.dtl
-	dt2dv edited2.dtl edited2.dvi
-	dv2dt edited2.dvi edited3.dtl
+edited:  edited.txt dv2dt dt2dv
+	./$(DT2DV) edited.txt edited.dvi
+	./$(DV2DT) edited.dvi edited2.dtl
+	./$(DT2DV) edited2.dtl edited2.dvi
+	./$(DV2DT) edited2.dvi edited3.dtl
 	@if [ -s edited.dif ] ; \
 	then echo ERROR : differences in edited.dif ; \
 	else $(RM) edited.dif ; \
diff -riwBu -Xex dtl\man2ps dtl-modified\man2ps
--- dtl\man2ps	Tue Sep 19 23:59:22 2006
+++ dtl-modified\man2ps	Wed Sep 20 00:03:05 2006
@@ -20,16 +20,16 @@
 esac
 
 # We can use either GNU groff or Sun Solaris troff + dpost
-if [ -x /usr/local/bin/groff ]
+if [ which groff > /dev/null ]
 then	# GNU groff
 	TROFF="groff $FORMAT"
 	TROFF2PS="cat"
-elif [ -x /usr/lib/lp/postscript/dpost ]
++elif [ which dpost > /dev/null ]
 then	# Solaris 2.1
 	TROFF="troff $FORMAT"
 	TROFF2PS="/usr/lib/lp/postscript/dpost"
 else
-	echo "Cannot find troff-to-PostScript filter"
++	echo "Cannot find troff-to-PostScript filter" >&2
 	exit 1
 fi