C3 — Key and Environment Overrides

These change fundamental shell behavior: how keys work, which pager opens, and what the prompt looks like. Disabling __fish_config_op_overrides removes all of them.

Override	What it replaces or sets
`Vi mode`	fish_vi_key_bindings replaces default Emacs mode
`PATH setup`	Prepends custom bin directories to the PATH
`exit → smart_exit`	exit wrapper that captures scrollback before closing
`PAGER=ov`	ov used by git, man, and all $PAGER-aware tools
`EDITOR=nvim`	nvim fallback to vi for git commit, etc.
`GPG_TTY`	Sets GPG_TTY to current terminal tty
`MANPAGER=bat pipeline`	man pages rendered with syntax highlighting
`CDPATH=. ~/projects ~`	bare dir names resolve against ~/projects and ~
`Bang-bang system`	! and $ keys expand history; !^, !, !-N, !?str?, ^old^new abbreviations; six expand_bang_ helpers
`Autopair`	`( [ { " ' auto-close to (), [], {}, "", ''`
`Puffer key intercepts`	. ! $ * keys intercepted for smart expansion
`Starship prompt`	fish_prompt replaced by Starship + OSC 133 markers
`Catppuccin colors`	30+ fish_color_* variables set to Mocha palette
`FZF_DEFAULT_OPTS`	FZF themed to Catppuccin Mocha colors
`Right prompt`	fish_right_prompt: exit code (on failure) + dim timestamp; always rendered; Docker context added when starship+C3 active

The bang-bang system spans key_bindings.fish, abbr.fish, puffer.fish, and six expand_bang_*.fish functions. All are gated together — disabling C3 removes the entire bang-expansion system at once.

When C3 is disabled, exit falls back to builtin exit with no scrollback capture, no Kitty IPC, and no file I/O on exit. The scrollback capture block is independently controlled by C5 (see below).

Sub-categories

__fish_config_op_overrides sub-divides into three sub-categories, each with its own __fish_config_op_overrides_<slug> toggle:

key-bindings

Vi mode, autopair, puffer key intercepts, bang-bang history expansion, and smart_exit’s plain-exit path.

environment

$PATH, $PAGER/$EDITOR/$GPG_TTY, and $CDPATH.

prompt

Starship, the right prompt, Catppuccin syntax/prompt colors, and FZF theming ($FZF_DEFAULT_OPTS) – all driven by the same guard as a single unit, not independently toggleable from each other.