Re: [9front] Upas: Complete date library conversion.

[ori@eigenstate.org]

>> This patch completes the conversion to our new date and
>> time APIs. Needs careful review and testing. The imap
>> part seems to be working. I'm waiting on vultr to unblock
>> port 25 so I can test out the SMTP part of the patch.
> 
> One thing to note: This changes the date formats so that
> timezones are unambiguous, using the +HHMM offset syntax.

Oh. This goes with one change to libc:

diff -r 730a2ee35853 sys/man/2/tmdate
--- a/sys/man/2/tmdate	Thu Sep 17 16:11:10 2020 -0700
+++ b/sys/man/2/tmdate	Sat Sep 19 17:38:18 2020 -0700
@@ -135,6 +135,7 @@
 .TP
 .B ?
 When parsing, this makes the following argument match fuzzily.
+When formatting, this is ignored.
 Fuzzy matching means that all formats are tried, from most to least specific.
 For example, 
 .I ?M
diff -r 730a2ee35853 sys/src/libc/port/date.c
--- a/sys/src/libc/port/date.c	Thu Sep 17 16:11:10 2020 -0700
+++ b/sys/src/libc/port/date.c	Sat Sep 19 17:38:18 2020 -0700
@@ -428,6 +428,9 @@
 		switch(c0){
 		case 0:
 			break;
+		/* Ignore '?' so we can share parse and format strings */
+		case '?':
+			continue;
 		case 'Y':
 			switch(w){
 			case 1:	n += fmtprint(f, "%*d", pad, tm->year + 1900);		break;