Module extras 

Ready-made Capturable types for ambient process and environment state.

Each type snapshots a piece of context — the working directory, home directory, command-line arguments, or a named environment variable — into an error through a #[oopsie(capture)] field. Capturing never fails: an unavailable directory or variable is recorded as None.

Requires the extras feature.

Modules

env_vars

Ready-made EnvVarOpt aliases for common variables, plus the make_env_var! macro for declaring your own.

Structs

CurrentDirOpt

The current working directory at the time the error was built, or None if it could not be read.

EnvArgs

The process’s command-line arguments at the time the error was built.

EnvVarOpt

The value of the environment variable named by E at the time the error was built, or None if it was unset.

HomeDirOpt

The user’s home directory at the time the error was built, or None if it could not be determined.

Traits

EnvVarName

Names the environment variable that an EnvVarOpt reads.