# ENVIRON_HIDDEN

- **Language:** C
- **Kind:** constant
- **Source:** https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/tmux.h#L1165
- **Page:** https://libtmux.org/en/tmux/3.2a/reference/c-define-tmux-h-environ_hidden/

```c
#define ENVIRON_HIDDEN 0x1
```

## Referenced by

- [`cmd_set_environment_exec`](/en/tmux/3.2a/reference/c-function-cmd-set-environment-c-cmd_set_environment_exec/) (function)
- [`cmd_show_environment_print`](/en/tmux/3.2a/reference/c-function-cmd-show-environment-c-cmd_show_environment_print/) (function)
- [`environ_push`](/en/tmux/3.2a/reference/c-function-environ_push/) (function)