echo back context of call in error if likely to be useful.
For example, if os.Open("/etc/passwd", os.O_RDONLY)
fails with syscall.EPERM, it returns as the os.Error
&PathError{
Op: "open",
Path: "/etc/passwd"
Error: os.EPERM
}
which formats as
open /etc/passwd: permission denied
Not converted:
datafmt
go/...
google/...
regexp
tabwriter
template
R=r
DELTA=1153 (561 added, 156 deleted, 436 changed)
OCL=30738
CL=30781
not [a-zA-Z0-9+-.]) before there is a ":".
This is particularly helpful in the erroneous-but-relatively-common
case of relative URLs containing an unescaped colon in the query
string--see the added test for an example.
R=rsc
APPROVED=rsc
DELTA=15 (15 added, 0 deleted, 0 changed)
OCL=30354
CL=30356
Robert Griesemer
Russ Cox
Jacob Baskin
Rob Pike