diff options
Diffstat (limited to 'src/pkg/os/env.go')
| -rw-r--r-- | src/pkg/os/env.go | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/pkg/os/env.go b/src/pkg/os/env.go index eb265f241..db7fc72b8 100644 --- a/src/pkg/os/env.go +++ b/src/pkg/os/env.go @@ -9,7 +9,7 @@ package os import "syscall" // Expand replaces ${var} or $var in the string based on the mapping function. -// Invocations of undefined variables are replaced with the empty string. +// For example, os.ExpandEnv(s) is equivalent to os.Expand(s, os.Getenv). func Expand(s string, mapping func(string) string) string { buf := make([]byte, 0, 2*len(s)) // ${} is all ASCII, so bytes are fine for this operation. |