Revise print_symbol(), never calling is{float,ratio}_string(). src/ChangeLog addition: 2015-05-08 Aidan Kehoe <kehoea@parhasard.net> * print.c (print_symbol): Revise this. No longer call isfloat_string() and isratio_string() on practically every symbol seen; check explicitly for the known float format in this function, which turns out to be a more limited and cheap job than you would think. Also check for integer and ratio syntax in passing. Use Vdigit_fixnum_map when working out whether a given character is a digit. * lisp.h: Make Vdigit_fixnum_map available generally. tests/ChangeLog addition: 2015-05-08 Aidan Kehoe <kehoea@parhasard.net> * automated/lisp-reader-tests.el: Check read and print handling of symbols that look like numbers. In passing, check the read and print handling of the associated numbers.

--- a/src/ChangeLog	Fri May 08 13:58:22 2015 +0100
+++ b/src/ChangeLog	Fri May 08 14:33:46 2015 +0100
@@ -1,3 +1,16 @@
+2015-05-08  Aidan Kehoe  <kehoea@parhasard.net>
+
+	* print.c (print_symbol):
+	Revise this. No longer call isfloat_string() and isratio_string()
+	on practically every symbol seen; check explicitly for the known
+	float format in this function, which turns out to be a more
+	limited and cheap job than you would think.
+	Also check for integer and ratio syntax in passing.
+	Use Vdigit_fixnum_map when working out whether a given character
+	is a digit.
+	* lisp.h:
+	Make Vdigit_fixnum_map available generally.
+
 2015-05-08  Aidan Kehoe  <kehoea@parhasard.net>
 
 	* data.c (Fstring_to_number):