support floating point numbers

* Extends the SciTECO type system. A number on the expression stack
  or in a Q-register can be either an integer or a float.
* Floating point constants begin with a digit (like all other
  numbers), are followed by a `.` and an optional fractional part.
  Exponents cannot currently be written.
  E.g. `1.` == `1.0`. But `.0` would still be `.,0`.
  (!) To push an integer followed by dot, you must now write e.g. `1,.` or `1 .`.
* All of the basic arithmetic operators operate like this:
  If both operands are integers, the result is also an integer (integer arithmetics).
  If at least one of the operands is a float, the result is also a float (float arithmetics).
* All of the binary operators (AND, OR, XOR) always cast all
  operands to integer and the result is always an integer as well.
* You can "cast" integers to float by `*1.` or `/1.`.
  You can "cast" floats to integers using `#0`.
* Most commands still accept only integers. Floats are implicitly casted to integers.
  Float-aware commands are: =, \, ^W, Qq, Uq, %q and the conditionals.
* `%q` will not change the current type of register q.
* Numeric part of "lexer.font" is now a float (in points).
* You cannot currently print octal and hexadecimal floats.
  `==` and `===` are identical to `=` on floats.
* `===` is now printing hex integers in lower case.
  This is because SciTECO's coding style for hex constants is also lower case.
* `--with-teco-integer` renamed to `--with-teco-number`.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/cmdline.c b/src/cmdline.c
index 1abf8df..c9fcf75 100644
--- a/src/cmdline.c
+++ b/src/cmdline.c
@@ -442,7 +442,7 @@ teco_cmdline_keymacro(const gchar *name, gssize name_len, GError **error)
 	teco_qreg_t *macro_reg = teco_qreg_table_find(&teco_qreg_table_globals, macro_name, sizeof(macro_name));
 	if (macro_reg) {
 		teco_int_t macro_mask;
-		if (!macro_reg->vtable->get_integer(macro_reg, &macro_mask, error))
+		if (!teco_qreg_get_integer(macro_reg, &macro_mask, error))
 			return TECO_KEYMACRO_ERROR;
 
 		/*