?? in existing source code

[tanner at ki4pv.UUCP]

In article <14830 at brl-adm.ARPA>, gwyn at BRL.ARPA (VLD/VMB) writes:
)  [ stats of his current progs; no non-comment instances of "??" ] ....
) This supports my claim about lack of code breakage by trigraphs.

For contrast, I just processed the body of the most important prog
in our major application.
	total	97 files	25758 lines
	"??"	 4 files	    6 lines

All of the "??" instances were in strings to be output in case of
exception conditions.
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