From 9f8d62ab644553b11286dbcd283db56c83d6ebdd Mon Sep 17 00:00:00 2001
From: Ori Bernstein <ori@eigenstate.org>
Date: Tue, 22 Sep 2020 19:24:01 -0700
Subject: libc: ignore '?' in date format strings

Ignoring '?' when formatting date strings allows
the format strings to be reused for parsing. This
is convenient, since we don't need to duplicate
the format strings.
---
 sys/src/libc/port/date.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'sys/src/libc')

diff --git a/sys/src/libc/port/date.c b/sys/src/libc/port/date.c
index 1c90a7985..7be6cb52f 100644
--- a/sys/src/libc/port/date.c
+++ b/sys/src/libc/port/date.c
@@ -428,6 +428,9 @@ static int
 		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;
-- 
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