# HG changeset patch
# User Rik <rik@octave.org>
# Date 1417805672 28800
# Node ID e72052d96a13821b3f9514b9937ee97f1358a677
# Parent  af41e41ad28ea05ca0426de04f49e3f1de32c48c
Use emptyset symbol rather than circled division slash in Tex interpreter for '\0'.

* libinterp/corefcn/module.mk: Fix AWK code to correctly ignore comment lines
in rule which generates oct-tex-symbols.cc from oct-tex-symbols.in.

* oct-tex-symbols.in: Revise documentation comments.  Use 0x2205 (emptyset)
for '\0'.

diff -r af41e41ad28e -r e72052d96a13 libinterp/corefcn/module.mk
--- a/libinterp/corefcn/module.mk	Fri Dec 05 13:08:36 2014 +0100
+++ b/libinterp/corefcn/module.mk	Fri Dec 05 10:54:32 2014 -0800
@@ -323,7 +323,7 @@
 	mv $@-t $@
 
 corefcn/oct-tex-symbols.cc: corefcn/oct-tex-symbols.in Makefile.am
-	$(AWK) 'BEGIN { print "// DO NOT EDIT. AUTOMATICALLY GENERATED FROM oct-tex-symbols.in."; print "static uint32_t symbol_codes[][2] = {"; count = 0; } END { print "};"; printf("static int num_symbol_codes = %d;\n", count); } /^#/ { } { if (NF == 3) { printf("  { %s, %s },\n", $$2, $$3); count++; } }' $< > $@-t
+	$(AWK) 'BEGIN { print "// DO NOT EDIT. AUTOMATICALLY GENERATED FROM oct-tex-symbols.in."; print "static uint32_t symbol_codes[][2] = {"; count = 0; } END { print "};"; printf("static int num_symbol_codes = %d;\n", count); } !/^#/ && (NF == 3) { printf("  { %s, %s },\n", $$2, $$3); count++; }' $< > $@-t
 	mv $@-t $@
 
 corefcn/txt-eng.cc: corefcn/oct-tex-symbols.cc
diff -r af41e41ad28e -r e72052d96a13 libinterp/corefcn/oct-tex-symbols.in
--- a/libinterp/corefcn/oct-tex-symbols.in	Fri Dec 05 13:08:36 2014 +0100
+++ b/libinterp/corefcn/oct-tex-symbols.in	Fri Dec 05 10:54:32 2014 -0800
@@ -1,12 +1,14 @@
 # List of supported symbols for the TeX interpreter
-# (http://www.mathworks.com/help/matlab/ref/text_props.html):
-# - symbol name
-# - Unicode code
-# - MS symbol code (http://www.kostis.net/charsets/symbol.htm)
-# - Arranged by listings in The TeXbook, Appendix F 
-# - Lowercase Greek letters: Greek Upper case: Misc Symbols type Ord: "Large" operators:
-# - Binary operators: Relations: Negated relations: Arrows: Openings: Closings: Alternate names:
-# - Other (not in Appendix F Tables):
+# Reference: http://www.mathworks.com/help/matlab/ref/text_props.html
+#
+# Column 1 : symbol name
+# Column 2 : Unicode code
+# Column 3 : MS symbol code (http://www.kostis.net/charsets/symbol.htm)
+#
+# Arranged by listings in The TeXbook, Appendix F:
+# Greek lower case letters, Greek upper case, Misc Symbols type Ord,
+# "Large" operators, Binary operators, Relations, Negated relations, Arrows,
+# Openings, Closings, Alternate names, and Other (not in Appendix F Tables).
 
 alpha           0x03B1  0xF061
 beta            0x03B2  0xF062
@@ -108,6 +110,6 @@
 rceil           0x2309  0xF0F9
 neq             0x2260  0xF0B9
 ldots           0x2026  0xF0BC
-0               0x2298  0xF0C6
+0               0x2205  0xF0C6
 copyright       0x00A9  0xF0E3
 deg             0x00B0  0xF0B0