Ion Shell In-Depth Reference

Comprehensive reference for ion shell internals, with emphasis on the completion system and how external tools hook into it.

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Keywords	Reference
IonCompleter, IonFileCompleter, MultiCompleter, Completer trait, CompletionType, CursorPosition, BeforeComplete event, filename_completion, escape/unescape, command completion, variable completion, file completion, PATH scanning, tab completion, completion cycling, completion display, nospace, carapace ion integration, JSON suggestion format	references/completion.md
Liner, redox_liner, Editor, Context, KeyMap, KeyBindings, emacs mode, vi mode, key bindings, Tab, Ctrl+F, autosuggestion, history, Buffer, word divider, get_buffer_words, print_completion_list, complete() method, read_line()	references/line-editing.md
ion syntax, variables, arrays, let, sigils, $, @, type system, string methods, array methods, slicing, brace expansion, command substitution, process substitution, quoting, single quotes, double quotes, escape sequences, functions, fn, control flow, if, for, while, matches, test, redirection, ^>, ^	, &>, &
execution, subshell, background jobs, fg, bg, jobs, disown, wait, signals, exit status, &&,
initrc, XDG_CONFIG_HOME, startup files, keybindings, set -o, history configuration, HISTFILE, HISTORY_IGNORE, PROMPT function, color namespace, env namespace, aliases, environment variables, ion-plugins	references/startup-config.md