(e.g. "@code:BIG-RED@", the argument would get chopped to just "BIG")
so don't support format modifiers when a ':' is present in the @-code.

When appended to an @-code, displays it double-wide using "fullwidth" Unicode
code points if possible, spaces between the characters otherwise.

The pipe char is problematic to discuss in msg bases and on the Wiki. <shrug>

Create a sbbs_t method: wide(), which displays a string using "fullwidth"
Unicode characters, when possible, otherwise, double-spaced.
Exposed in JS via console.wide() and a new @-code: WIDE:<string>

unicode_width() now correctly returns 2 for the CJK and other code points that
are typically displayed in 2 columns with non-proportional fonts.

Mainly, for the purpose of determing which code points represent "fullwidth"
(2 column) characters.

VS: ----------------------------------------------------------------------

(currently).
Created for use with the EnterYourBirthday text.dat string, so the CHECKMARK
@-code can be used as well. @-codes can't be used in strings with
printf-specifiers (e.g. %s).

square root symbol (or PETSCII check mark), as appropriate.

with UNICODE_*

enumeration value '...' not handled in switch

in unicode_width().

<Deuce> Unicode isn't encoding.
<Deuce> And petdefs.h is a mapping.
:-)

@U+<codepoint-in-hex>@ - automatic CP437 fallback char, if available
@U+<codepoint-in-hex|cp437char-in-hex>, specify CP437 fallback char
@U+<codepoint-in-hex!cp437char-in-hex>, specify CP437 fallback char
(used if no automatic fallback mapping is available)

Replaced unicode_is_zerowidth() with unicode_width(), in preparation for
"fullwidth" char support.
Added UNICODE_UNDEFINED definition (0x0000)
(UNICODE_NULL is already defined, at least in MSVC).

if (fg)
	FREE_AND_NULL(fd);
else
	FREE_AND_NULL(bg);

Since not *everything* that #include's sbbs.h needs the PETSCII defs,
remove it from sbbs.h and just #include petdefs.h where we need it.
The catch-all header file is a problematic organizational design and we are
moving away from that.

enum unicode_codepoint.
I got tired of looking up and cross-referencing all these damn numbers.

Disable the "Swap DEL/BBS key" question, by default (if the user sends
DEL, do the swap).
Beautify the backspace key prompt/report thing (add/remove blanks lines
mostly).

Disable the "Swap DEL/BBS key" question, by default (if the user sends
DEL, do the swap).
Beautify the backspace key prompt/report thing (add/remove blanks lines
mostly).

This means the JS global word_wrap() method has a new optional Boolean arg
as well.