handle 0 precision better
diff --git a/src/lib9/encodefmt.c b/src/lib9/encodefmt.c
index 6e12798..7c4a589 100644
--- a/src/lib9/encodefmt.c
+++ b/src/lib9/encodefmt.c
@@ -11,16 +11,18 @@
uchar *b;
char obuf[64]; // rsc optimization
- if(!(f->flags&FmtPrec) || f->prec < 1)
- goto error;
-
b = va_arg(f->args, uchar*);
if(b == 0)
return fmtstrcpy(f, "<nil>");
ilen = f->prec;
f->prec = 0;
+
+ if(!(f->flags&FmtPrec) || ilen < 0)
+ goto error;
+
f->flags &= ~FmtPrec;
+
switch(f->r){
case '<':
len = (8*ilen+4)/5 + 3;