Hello world 👋

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

internal/ui/keys/keys.go

@@ -0,0 +1,376 @@
+// Package keys defines the keymap: named actions in contexts, their
+// default keys, and overrides from the config:
+//
+//	keybinding:
+//	  lists:
+//	    star: [f]
+//	    versions: []          # unbound
+//	  filter:
+//	    star: [ctrl+f]
+//
+// An action set in the config gets exactly the keys given, replacing its
+// defaults; an empty list unbinds it. Everything that shows a key (the
+// help bar, ?, footers, hints) reads it from here.
+package keys
+
+import (
+	"fmt"
+	"slices"
+	"sort"
+	"strings"
+
+	"charm.land/bubbles/v2/key"
+)
+
+// Contexts group the actions by where they apply. The search popup takes
+// search's actions and popup's.
+const (
+	Lists  = "lists"  // the panes, when not typing
+	Filter = "filter" // typing a filter in a pane
+	Menu   = "menu"   // popups without a text field
+	Popup  = "popup"  // popups with a text field: favourites, help, search, notes, open link
+	Search = "search" // Go to's own actions while typing
+	GoTo   = "goto"   // Go to while browsing (no text field active)
+)
+
+type Map struct {
+	// lists
+	Up, Down, Top, Bottom             key.Binding
+	NextPane, PrevPane                key.Binding
+	Pane1, Pane2, Pane3, Pane4        key.Binding
+	NextTab, PrevTab                  key.Binding
+	Enter, Back, Filter               key.Binding
+	Reveal, Copy, CopyRef, Open       key.Binding
+	Versions, Favourite, Favourites   key.Binding
+	Recent                            key.Binding
+	Note, Share, ShareMenu, OpenRef   key.Binding
+	Search, SourcesView, Commands     key.Binding
+	SplitLeft, SplitRight, SplitReset key.Binding
+	Taller, Shorter, ZoomIn, ZoomOut  key.Binding
+	Login, Refresh, Help, Quit        key.Binding
+	Update                            key.Binding
+	// filter
+	AcceptFilter, ClearFilter            key.Binding
+	FilterUp, FilterDown                 key.Binding
+	FilterCopy, FilterReveal, FilterStar key.Binding
+	// menu
+	MenuUp, MenuDown, MenuSelect, MenuClose key.Binding
+	// popup
+	PopupUp, PopupDown, PopupSelect, PopupClose, PopupStar key.Binding
+	// search
+	SearchSources, SearchResults, SearchSwitch key.Binding
+	SearchLoad, SearchLoadAll                  key.Binding
+	// goto
+	GoDown, GoUp, GoPrevTab, GoNextTab  key.Binding
+	GoSources, GoResults, GoSwitch      key.Binding
+	GoStar, GoLoad, GoLoadAll, GoFilter key.Binding
+	GoSelect, GoClose                   key.Binding
+}
+
+// Action is a binding with its name in the config and what it does.
+type Action struct {
+	Context, Name string
+	Binding       *key.Binding
+	Desc          string // short, for the help bar
+	Group         string // section in the ? menu
+	Tip           string // a sentence or two for the ? menu
+}
+
+// Actions lists every action, in the ? menu's order.
+func (m *Map) Actions() []Action {
+	a := func(ctx, name string, b *key.Binding, desc, group, tip string) Action {
+		return Action{ctx, name, b, desc, group, tip}
+	}
+	return []Action{
+		a(Lists, "up", &m.Up, "up", "move", "Move up in the focused list, or scroll the detail pane."),
+		a(Lists, "down", &m.Down, "down", "move", "Move down in the focused list, or scroll the detail pane."),
+		a(Lists, "top", &m.Top, "top", "move", "Jump to the top of the focused list."),
+		a(Lists, "bottom", &m.Bottom, "bottom", "move", "Jump to the bottom of the focused list."),
+		a(Lists, "nextPane", &m.NextPane, "next pane", "move", "Focus the next pane: Sources, Vaults, Secrets, detail."),
+		a(Lists, "prevPane", &m.PrevPane, "prev pane", "move", "Focus the previous pane."),
+		a(Lists, "pane1", &m.Pane1, "Sources pane", "move", "Focus the Sources pane."),
+		a(Lists, "pane2", &m.Pane2, "Vaults pane", "move", "Focus the Vaults (or Scopes) pane."),
+		a(Lists, "pane3", &m.Pane3, "Secrets pane", "move", "Focus the Secrets pane."),
+		a(Lists, "pane4", &m.Pane4, "detail pane", "move", "Focus the detail pane."),
+		a(Lists, "enter", &m.Enter, "open", "move", "Go into the selected item: from a subscription to its vaults, from a vault to its secrets. On a provider header, fold or unfold it."),
+		a(Lists, "back", &m.Back, "back", "move", "Go back: clear an applied filter, leave the versions view, or focus the previous pane."),
+
+		a(Lists, "filter", &m.Filter, "filter", "lists", "Filter the focused list by name, fuzzily: dbpw finds db-password. In Sources the provider and account match too."),
+		a(Lists, "prevTab", &m.PrevTab, "prev tab", "lists", "Previous tab of the focused pane: Sources and Favourites in Sources; Secrets, Keys, Certs in Secrets."),
+		a(Lists, "nextTab", &m.NextTab, "next tab", "lists", "Next tab of the focused pane."),
+		a(Lists, "sourcesView", &m.SourcesView, "grouped/flat sources", "lists", "Switch the Sources pane between grouped by provider and a flat list."),
+		a(Lists, "star", &m.Favourite, "star", "lists", "Star or unstar the selected subscription, vault or secret, for the account showing it. Starred items get a ★ and sort first."),
+		a(Lists, "search", &m.Search, "search", "lists", "Go to anything: search every vault and secret loaded and jump to one, starting in the source you're in. On the left, the scope: Favourites, Recent, All, or one source (○ ◐ ● for how much of it is loaded)."),
+		a(Lists, "favourites", &m.Favourites, "favourites", "lists", "Go to, on Favourites: everything you've starred, to search and jump to."),
+		a(Lists, "recent", &m.Recent, "recent", "lists", "Go to, on Recent: what you used last, newest first."),
+		a(Lists, "commands", &m.Commands, "commands", "lists", "List the custom commands for the focused pane (customCommands in the config) and run one."),
+		a(Lists, "note", &m.Note, "note", "lists", "Write a short note on the selected subscription, vault or secret, shown on the right of its row. Filtering matches notes too."),
+
+		a(Lists, "reveal", &m.Reveal, "reveal/hide", "secrets", "Show or hide the selected value. For keys and certificates: the public key or certificate."),
+		a(Lists, "copyValue", &m.Copy, "copy value", "secrets", "Copy the selected value without showing it. It is cleared from the clipboard after a countdown."),
+		a(Lists, "copyReference", &m.CopyRef, "copy reference", "secrets", "Copy the reference to use in config, e.g. @Microsoft.KeyVault(SecretUri=…) or {{secrets/scope/key}}."),
+		a(Lists, "versions", &m.Versions, "versions", "secrets", "List the versions of the selected item (Azure). Reveal, copy and share then act on the selected version."),
+		a(Lists, "openInBrowser", &m.Open, "open in browser", "secrets", "Open the selected subscription, vault or item in the browser (Azure portal or Databricks workspace)."),
+
+		a(Lists, "share", &m.Share, "copy link", "share", "Copy a lazysecrets:// link to the selected subscription, workspace, vault, scope or secret, for sharing. From the versions view the link is pinned to that version."),
+		a(Lists, "shareMenu", &m.ShareMenu, "share…", "share", "Choose what to share: the lazysecrets link, the plain Key Vault URL, the config reference, or the web page."),
+		a(Lists, "openLink", &m.OpenRef, "open link", "share", "Open a lazysecrets:// link, Key Vault URL or reference. Pasting one into lazysecrets does the same."),
+
+		a(Lists, "dividerLeft", &m.SplitLeft, "divider left", "layout", "Move the divider between the left panes and the detail pane to the left."),
+		a(Lists, "dividerRight", &m.SplitRight, "divider right", "layout", "Move the divider between the left panes and the detail pane to the right."),
+		a(Lists, "taller", &m.Taller, "taller", "layout", "Make the focused left pane taller."),
+		a(Lists, "shorter", &m.Shorter, "shorter", "layout", "Make the focused left pane shorter."),
+		a(Lists, "zoomIn", &m.ZoomIn, "zoom", "layout", "Zoom the focused pane: normal, half screen, full screen."),
+		a(Lists, "zoomOut", &m.ZoomOut, "unzoom", "layout", "Zoom back out."),
+		a(Lists, "resetLayout", &m.SplitReset, "reset layout", "layout", "Reset the divider, pane heights and zoom."),
+
+		a(Lists, "refresh", &m.Refresh, "refresh", "other", "Reload the focused pane, bypassing the cache."),
+		a(Lists, "login", &m.Login, "sign in", "other", "Sign in again (az login or databricks auth login) when a login has expired."),
+		a(Lists, "update", &m.Update, "update", "other", "Check for a newer lazysecrets: its changelog, and update to it."),
+		a(Lists, "help", &m.Help, "help", "other", "Show this list. Also works in Go to while browsing, and in menus, showing their keys first."),
+		a(Lists, "quit", &m.Quit, "quit", "other", "Quit lazysecrets. ctrl+c always quits too."),
+
+		a(Filter, "down", &m.FilterDown, "down", "while filtering", "Move down while typing a filter."),
+		a(Filter, "up", &m.FilterUp, "up", "while filtering", "Move up while typing a filter."),
+		a(Filter, "copyValue", &m.FilterCopy, "copy value", "while filtering", "Copy the selected value while typing a filter."),
+		a(Filter, "reveal", &m.FilterReveal, "reveal/hide", "while filtering", "Reveal or hide the selected value while typing a filter."),
+		a(Filter, "star", &m.FilterStar, "star", "while filtering", "Star or unstar the selected item while typing a filter."),
+		a(Filter, "accept", &m.AcceptFilter, "apply filter", "while filtering", "Stop typing and keep the filter."),
+		a(Filter, "clear", &m.ClearFilter, "clear filter", "while filtering", "Clear the filter."),
+
+		a(Menu, "down", &m.MenuDown, "down", "menus", "Move down in a menu."),
+		a(Menu, "up", &m.MenuUp, "up", "menus", "Move up in a menu."),
+		a(Menu, "select", &m.MenuSelect, "select", "menus", "Pick the selected entry. Each entry's letter picks it directly."),
+		a(Menu, "close", &m.MenuClose, "dismiss", "menus", "Close the menu."),
+
+		a(Popup, "down", &m.PopupDown, "down", "popups", "Move down in a popup with a text field (favourites, help, search)."),
+		a(Popup, "up", &m.PopupUp, "up", "popups", "Move up in a popup with a text field."),
+		a(Popup, "select", &m.PopupSelect, "go", "popups", "Go to the selected entry, or confirm what you typed."),
+		a(Popup, "close", &m.PopupClose, "close", "popups", "Close the popup."),
+		a(Popup, "star", &m.PopupStar, "star", "popups", "Star or unstar the selected entry in Go to. It stays where it is until Go to opens again."),
+
+		a(Search, "sources", &m.SearchSources, "sources", "search", "Move to the sources list."),
+		a(Search, "results", &m.SearchResults, "results", "search", "Move to the results list."),
+		a(Search, "switchList", &m.SearchSwitch, "switch list", "search", "Switch between the sources and the results."),
+		a(Search, "load", &m.SearchLoad, "load selected", "search", "Load (or reload) the selected source's vaults and secrets, or the selected vault's secrets, in the background."),
+		a(Search, "loadAll", &m.SearchLoadAll, "load all", "search", "Load every source's vaults and secrets in the background, to search them all."),
+
+		a(GoTo, "down", &m.GoDown, "down", "go to", "Move down in Go to while browsing."),
+		a(GoTo, "up", &m.GoUp, "up", "go to", "Move up in Go to while browsing."),
+		a(GoTo, "prevTab", &m.GoPrevTab, "prev tab", "go to", "Previous tab of Go to: Favourites, Recent, Search."),
+		a(GoTo, "nextTab", &m.GoNextTab, "next tab", "go to", "Next tab of Go to."),
+		a(GoTo, "sources", &m.GoSources, "sources", "go to", "Move to the sources list (Search tab)."),
+		a(GoTo, "results", &m.GoResults, "results", "go to", "Move to the results list (Search tab)."),
+		a(GoTo, "switchList", &m.GoSwitch, "switch list", "go to", "Switch between the sources and the results (Search tab)."),
+		a(GoTo, "star", &m.GoStar, "star", "go to", "Star or unstar the selected entry. It stays where it is until Go to opens again."),
+		a(GoTo, "load", &m.GoLoad, "load selected", "go to", "Load (or reload) the selected source or vault in the background (Search tab)."),
+		a(GoTo, "loadAll", &m.GoLoadAll, "load all", "go to", "Load everything in the background, to search it all (Search tab)."),
+		a(GoTo, "filter", &m.GoFilter, "filter", "go to", "Start typing to filter the list."),
+		a(GoTo, "select", &m.GoSelect, "go", "go to", "Go to the selected entry."),
+		a(GoTo, "close", &m.GoClose, "close", "go to", "Close Go to."),
+	}
+}
+
+// defaults follow one rule: a letter in the lists, ctrl+ the same letter
+// where you type.
+var defaults = map[string][]string{
+	"lists.up": {"k", "up", "ctrl+k", "ctrl+p"}, "lists.down": {"j", "down", "ctrl+j", "ctrl+n"},
+	"lists.top": {"g", "home"}, "lists.bottom": {"G", "end"},
+	"lists.nextPane": {"tab", "l", "right"}, "lists.prevPane": {"shift+tab", "h", "left"},
+	"lists.pane1": {"1"}, "lists.pane2": {"2"}, "lists.pane3": {"3"}, "lists.pane4": {"4"},
+	"lists.enter": {"enter"}, "lists.back": {"esc", "backspace"},
+	"lists.filter": {"/"}, "lists.prevTab": {"["}, "lists.nextTab": {"]"}, "lists.sourcesView": {"`"},
+	"lists.star": {"f"}, "lists.favourites": {"F"}, "lists.recent": {"R"}, "lists.search": {"ctrl+s"}, "lists.note": {"n"},
+	"lists.commands": {"x"},
+	"lists.reveal":   {"space"}, "lists.copyValue": {"y"}, "lists.copyReference": {"Y"},
+	"lists.versions": {"v"}, "lists.openInBrowser": {"o"},
+	"lists.share": {"s"}, "lists.shareMenu": {"S"}, "lists.openLink": {"ctrl+o"},
+	"lists.dividerLeft": {"ctrl+left", "<"}, "lists.dividerRight": {"ctrl+right", ">"},
+	"lists.taller": {"ctrl+down", "}"}, "lists.shorter": {"ctrl+up", "{"},
+	"lists.zoomIn": {"+"}, "lists.zoomOut": {"_"}, "lists.resetLayout": {"="},
+	"lists.refresh": {"r"}, "lists.login": {"L"}, "lists.update": {"U"}, "lists.help": {"?"}, "lists.quit": {"q"},
+
+	"filter.down": {"ctrl+j", "ctrl+n", "down"}, "filter.up": {"ctrl+k", "ctrl+p", "up"},
+	"filter.copyValue": {"ctrl+y"}, "filter.reveal": {"ctrl+r"}, "filter.star": {"ctrl+f"},
+	"filter.accept": {"enter"}, "filter.clear": {"esc"},
+
+	"menu.down": {"j", "down", "ctrl+j", "ctrl+n"}, "menu.up": {"k", "up", "ctrl+k", "ctrl+p"},
+	"menu.select": {"enter"}, "menu.close": {"esc"},
+
+	"popup.down": {"ctrl+j", "ctrl+n", "down"}, "popup.up": {"ctrl+k", "ctrl+p", "up"},
+	"popup.select": {"enter"}, "popup.close": {"esc"}, "popup.star": {"ctrl+f"},
+
+	"search.sources": {"ctrl+h"}, "search.results": {"ctrl+l"}, "search.switchList": {"tab", "shift+tab"},
+	"search.load": {"ctrl+r"}, "search.loadAll": {"ctrl+a"},
+
+	"goto.down": {"j", "down"}, "goto.up": {"k", "up"}, "goto.prevTab": {"["}, "goto.nextTab": {"]"},
+	"goto.sources": {"h", "left"}, "goto.results": {"l", "right"}, "goto.switchList": {"tab", "shift+tab"},
+	"goto.star": {"f"}, "goto.load": {"r"}, "goto.loadAll": {"a"}, "goto.filter": {"/"},
+	"goto.select": {"enter"}, "goto.close": {"esc", "q"},
+}
+
+// Default is the keymap without overrides.
+func Default() Map {
+	var m Map
+	for _, a := range m.Actions() {
+		*a.Binding = bind(defaults[a.Context+"."+a.Name], a.Desc)
+	}
+	m.Login.SetEnabled(false) // shown and active only once a login expires
+	return m
+}
+
+func bind(keys []string, desc string) key.Binding {
+	if len(keys) == 0 {
+		return key.NewBinding(key.WithDisabled())
+	}
+	return key.NewBinding(key.WithKeys(keys...), key.WithHelp(Label(keys), desc))
+}
+
+// Label shows keys in help: the first two, arrows as arrows, a shared
+// ctrl+ written once ("k/↑", "ctrl+j/n").
+func Label(keys []string) string {
+	pretty := strings.NewReplacer("left", "←", "right", "→", "up", "↑", "down", "↓", "backspace", "⌫")
+	var out []string
+	for i, k := range keys[:min(2, len(keys))] {
+		k = pretty.Replace(k)
+		if rest, ok := strings.CutPrefix(k, "ctrl+"); ok && i > 0 && strings.HasPrefix(out[i-1], "ctrl+") {
+			k = rest
+		}
+		out = append(out, k)
+	}
+	return strings.Join(out, "/")
+}
+
+// Name is the key to mention in a hint ("space to reveal"): the first one
+// bound, or "" if the action is unbound.
+func Name(b key.Binding) string {
+	if ks := b.Keys(); len(ks) > 0 {
+		return Label(ks[:1])
+	}
+	return ""
+}
+
+// Apply overrides the defaults from the config: each action given gets
+// exactly the keys listed; none unbinds it. Unknown contexts or actions,
+// and a key bound to two actions that apply together, are errors.
+func (m *Map) Apply(cfg map[string]map[string][]string) error {
+	byName := map[string]Action{}
+	contexts := map[string]bool{}
+	for _, a := range m.Actions() {
+		byName[a.Context+"."+a.Name] = a
+		contexts[a.Context] = true
+	}
+	for _, ctx := range sortedKeys(cfg) {
+		if !contexts[ctx] {
+			return fmt.Errorf("keybinding: unknown context %q (known: %s)", ctx, strings.Join(sortedKeys(contexts), ", "))
+		}
+		for _, name := range sortedKeys(cfg[ctx]) {
+			a, ok := byName[ctx+"."+name]
+			if !ok {
+				return fmt.Errorf("keybinding.%s: unknown action %q (known: %s)", ctx, name, strings.Join(m.names(ctx), ", "))
+			}
+			*a.Binding = bind(cfg[ctx][name], a.Desc)
+		}
+	}
+	m.Login.SetEnabled(false)
+	return m.check()
+}
+
+func (m *Map) names(ctx string) []string {
+	var out []string
+	for _, a := range m.Actions() {
+		if a.Context == ctx {
+			out = append(out, a.Name)
+		}
+	}
+	sort.Strings(out)
+	return out
+}
+
+func sortedKeys[V any](set map[string]V) []string {
+	out := make([]string, 0, len(set))
+	for k := range set {
+		out = append(out, k)
+	}
+	sort.Strings(out)
+	return out
+}
+
+// check finds a key bound to two actions that apply together: within a
+// context, and in the search popup (search and popup).
+func (m *Map) check() error {
+	for _, group := range [][]string{{Lists}, {Filter}, {Menu}, {Popup}, {Search, Popup}, {GoTo}} {
+		seen := map[string]string{}
+		for _, a := range m.Actions() {
+			if !slices.Contains(group, a.Context) {
+				continue
+			}
+			name := a.Context + "." + a.Name
+			for _, k := range a.Binding.Keys() {
+				if other, ok := seen[k]; ok && other != name {
+					return fmt.Errorf("keybinding: %q is bound to both %s and %s", k, other, name)
+				}
+				seen[k] = name
+			}
+		}
+	}
+	return nil
+}
+
+// Section is a titled group of actions for the ? menu.
+type Section struct {
+	Title   string
+	Entries []Action
+}
+
+// Sections groups the actions for the ? menu.
+func (m *Map) Sections() []Section {
+	var out []Section
+	for _, a := range m.Actions() {
+		if n := len(out); n == 0 || out[n-1].Title != a.Group {
+			out = append(out, Section{Title: a.Group})
+		}
+		out[len(out)-1].Entries = append(out[len(out)-1].Entries, a)
+	}
+	return out
+}
+
+// FilterHelp is shown while typing a filter.
+type FilterHelp struct{ Map }
+
+func (f FilterHelp) ShortHelp() []key.Binding {
+	return []key.Binding{f.FilterDown, f.FilterUp, f.FilterCopy, f.FilterReveal, f.FilterStar, f.AcceptFilter, f.ClearFilter}
+}
+
+func (f FilterHelp) FullHelp() [][]key.Binding { return [][]key.Binding{f.ShortHelp()} }
+
+// YAML is the keymap as a config section, every action with its keys and
+// what it does, to copy into the config and edit.
+func (m *Map) YAML() string {
+	var b strings.Builder
+	b.WriteString("keybinding:\n")
+	ctx := ""
+	for _, a := range m.Actions() {
+		if a.Context != ctx {
+			ctx = a.Context
+			fmt.Fprintf(&b, "  %s:\n", ctx)
+		}
+		quoted := make([]string, len(a.Binding.Keys()))
+		for i, k := range a.Binding.Keys() {
+			quoted[i] = fmt.Sprintf("%q", k)
+		}
+		fmt.Fprintf(&b, "    %-15s [%s]  # %s\n", a.Name+":", strings.Join(quoted, ", "), a.Desc)
+	}
+	return b.String()
+}
+
+// CheckExtra reports a key some other binding in the lists takes, for keys
+// added outside the keymap (custom commands). name says whose key it is.
+func (m *Map) CheckExtra(k, name string) error {
+	for _, a := range m.Actions() {
+		if a.Context == Lists && slices.Contains(a.Binding.Keys(), k) {
+			return fmt.Errorf("%s: %q is bound to lists.%s", name, k, a.Name)
+		}
+	}
+	return nil
+}

internal/ui/keys/keys_test.go

@@ -0,0 +1,81 @@
+package keys
+
+import (
+	"strings"
+	"testing"
+
+	"charm.land/bubbles/v2/key"
+	tea "charm.land/bubbletea/v2"
+)
+
+func press(s string) tea.KeyPressMsg { return tea.KeyPressMsg{Code: rune(s[0]), Text: s} }
+
+func TestDefaultsHaveNoConflicts(t *testing.T) {
+	m := Default()
+	if err := m.check(); err != nil {
+		t.Fatal(err)
+	}
+	for _, a := range m.Actions() {
+		if len(a.Binding.Keys()) == 0 {
+			t.Errorf("%s.%s has no default keys", a.Context, a.Name)
+		}
+	}
+}
+
+func TestApply(t *testing.T) {
+	m := Default()
+	err := m.Apply(map[string]map[string][]string{
+		"lists":  {"star": {"z"}, "versions": {}},
+		"filter": {"star": {"ctrl+x"}},
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if !key.Matches(press("z"), m.Favourite) || key.Matches(press("f"), m.Favourite) {
+		t.Error("star not rebound from f to z")
+	}
+	if m.Favourite.Help().Key != "z" {
+		t.Errorf("help shows %q", m.Favourite.Help().Key)
+	}
+	if m.Versions.Enabled() || Name(m.Versions) != "" {
+		t.Error("versions not unbound")
+	}
+	if Name(m.FilterStar) != "ctrl+x" || Name(m.PopupStar) != "ctrl+f" {
+		t.Errorf("filter star %q, popup star %q", Name(m.FilterStar), Name(m.PopupStar))
+	}
+}
+
+func TestApplyErrors(t *testing.T) {
+	for _, c := range []struct {
+		cfg  map[string]map[string][]string
+		want string
+	}{
+		{map[string]map[string][]string{"panes": {"star": {"x"}}}, `unknown context "panes"`},
+		{map[string]map[string][]string{"lists": {"starr": {"x"}}}, `unknown action "starr"`},
+		{map[string]map[string][]string{"lists": {"star": {"s"}}}, `"s" is bound to both`},            // share
+		{map[string]map[string][]string{"search": {"load": {"ctrl+f"}}}, `"ctrl+f" is bound to both`}, // popup star
+	} {
+		m := Default()
+		if err := m.Apply(c.cfg); err == nil || !strings.Contains(err.Error(), c.want) {
+			t.Errorf("%v: %v, want %q", c.cfg, err, c.want)
+		}
+	}
+	// The same key in contexts that never apply together is fine.
+	m := Default()
+	if err := m.Apply(map[string]map[string][]string{"filter": {"star": {"ctrl+r"}, "reveal": {"ctrl+e"}}}); err != nil {
+		t.Errorf("filter ctrl+r and search ctrl+r clash: %v", err)
+	}
+}
+
+func TestLabel(t *testing.T) {
+	for keys, want := range map[string]string{
+		"k up":               "k/↑",
+		"ctrl+j ctrl+n down": "ctrl+j/n",
+		"space":              "space",
+		"ctrl+left <":        "ctrl+←/<",
+	} {
+		if got := Label(strings.Fields(keys)); got != want {
+			t.Errorf("Label(%s) = %q, want %q", keys, got, want)
+		}
+	}
+}