icu4c api proposal: UnicodeString p+len fns should recognize len=-1

I propose to implement Jitterbug 2360, quote:

UnicodeString pointer+length functions should recognize length=-1 for NUL-terminated input.

There are some functions - at least the UnicodeString-from-codepage-char* constructors that do not 
recognize length=-1 for NUL-terminated input as most other ICU functions do. -1 should be recognized 
and strlen() called.


See "Using C Strings: NUL-Terminated vs. Length Parameters"/"Input string" in 
http://oss.software.ibm.com/icu/userguide/strings.html


Expiration: Friday, 2003-nov-07

Sincerely,
markus