[TCLCORE] Any objections to change "clock format -now" to "clock format now" ?

[Harald O. <har...@el...>]

TCL 8.6 clock format and friends have a clock seconds argument.
The value for clock second for the current time may be returned by 
[clock seconds].

To format the current day/time, the following command may be used:

% clock format [clock seconds] -format "%Y-%m-%d"
2024-07-31

TIP 688 addes the following shortcut for this for TCL8.7+:

% clock format -now -format "%Y-%m-%d"
2024-07-31

With ticket https://core.tcl-lang.org/tcl/info/cd257619
the following form was added:

% clock format now -format "%Y-%m-%d"
2024-07-31

The rationales for this:
- It is not a positional parameter (what "-" suggests). It is a special 
value for a parameter.
- 2 other commands use "now" in 8.6, none "-now" (free format date scan, 
Tk event generate)

The value "-now" still works, but is undocumented and not tested.

This change was added as an amendment to TIP 688:

https://core.tcl-lang.org/tips/doc/trunk/tip/688.md

I invite anybody to speak up now in case of objections.

Thanks to Sergey, Ashok and Schelte to make this happen!

Take care,
Harald