Document AUTOENV_CUR_* variables

README.md

@@ -136,7 +136,7 @@ $ printf '%s\n' "source ~/.autoenv/activate.sh" >> ~/.bash_profile
 
 ## Configuration
 
-_Before_ `source`ing `activate.sh`, you can set the following variables:
+_Before_ `source`ing `activate.sh`, you can set the following _shell variables_:
 
 - `AUTOENV_AUTH_FILE`: Files authorized to be sourced; defaults to `~/.autoenv_authorized` if it exists, otherwise, `~/.local/state/autoenv/authorized_list`
 - `AUTOENV_NOTAUTH_FILE`: Files not authorized to be sourced; defaults to `~/.autoenv_not_authorized` if it exists, otherwise, `~/.local/state/autoenv/not_authorized_list` (`master` branch only)
@@ -148,6 +148,13 @@ _Before_ `source`ing `activate.sh`, you can set the following variables:
 - `AUTOENV_VIEWER`: Program used to display env files prior to authorization; defaults to `cat` (`master` branch only)
 - `AUTOENV_PRESERVE_CD`: Set this variable to a non-empty string to prevent the `cd` builtin from being overridden (to active autoenv, you must invoke `autoenv_init` within a `cd` function of your own) (`master` branch only)
 
+### API
+
+Inside the `.env` file, two _environment variables_ can be accessed:
+
+- `AUTOENV_CUR_FILE` - The file being sourced.
+- `AUTOENV_CUR_DIR` - Equivalent to `dirname "$AUTOENV_CUR_FILE"`.
+
 ## Shells
 
 autoenv is tested on: