docs(help): trim examples and verbose doc comments in core commands

Signed-off-by: bircni <bircni@icloud.com>

internal/app/api.go

@@ -134,17 +134,10 @@ without quotes; jq does not need to be installed.
 On a terminal, JSON responses are indented and colored. A response outside 2xx prints
 its body, then fails with the HTTP status.`
 
-// apiExamples are the examples of tea api.
-const apiExamples = `# The login of the authenticated account
-$ tea api user --jq .login
-# Open issues of the current repository, as number and title
-$ tea api 'repos/{owner}/{repo}/issues?state=open' --jq '.[] | "\(.number) \(.title)"'
+const apiExamples = `$ tea api user --jq .login
 # Create an issue: -f sends strings, -F typed values
 $ tea api repos/{owner}/{repo}/issues -f title="Crash on start" -F labels='[3]'
-# Every page of the account's repositories
-$ tea api user/repos --paginate --jq '.[].full_name'
-# Send a JSON body from a file
-$ tea api -X PATCH repos/alice/project --input settings.json`
+$ tea api user/repos --paginate --jq '.[].full_name'`
 
 func (a *application) apiCommand() *cobra.Command {
 	var method, input, output string
@@ -293,9 +286,8 @@ func (a *application) apiCommand() *cobra.Command {
 	return cmd
 }
 
-// apiResponse writes response bodies for tea api: filtered by the jq query, as indented and colored
-// JSON on a terminal, otherwise as received, without terminal controls on a terminal. Output to a
-// terminal, JSON and pages end with a newline.
+// apiResponse writes response bodies for tea api: filtered by --jq, indented and colored JSON on a
+// terminal, otherwise as received (minus terminal controls on a terminal), ending with a newline.
 type apiResponse struct {
 	tty, color, paginate bool
 	query                string

internal/app/app.go

@@ -210,12 +210,10 @@ var rootGroups = map[string]string{
 	"run": "actions", "secret": "actions", "variable": "actions", "workflow": "actions",
 }
 
-// verbAliases are the gh-style short names that every command with a common verb accepts.
-// Commands add other gh verbs, such as new, co, add and get, to their own Aliases.
+// verbAliases are the gh-style short names of common verbs; commands add others to their own Aliases.
 var verbAliases = map[string]string{"list": "ls", "delete": "rm"}
 
-// addVerbAliases gives every list and delete command its short name, and lets its flags be named
-// in the plural.
+// addVerbAliases gives every list and delete command its short name and accepts plural flag names.
 func addVerbAliases(cmd *cobra.Command) {
 	if alias, ok := verbAliases[cmd.Name()]; ok && cmd.HasParent() && !slices.Contains(cmd.Aliases, alias) {
 		cmd.Aliases = append(cmd.Aliases, alias)
@@ -415,11 +413,9 @@ func Execute(ctx context.Context, deps Dependencies, args []string) error {
 
 var jsonFieldList = regexp.MustCompile(`^[A-Za-z][A-Za-z0-9_]*(,[A-Za-z][A-Za-z0-9_]*)*$`)
 
-// joinJSONFields accepts `--json number,title` like `--json=number,title`. A field-shaped word after a
-// bare --json stays a positional argument only when the selected command does not output those fields
-// and accepts the word as an argument, so a misspelled field reports the available fields rather than
-// an argument count. A bare --json still selects every field. Unknown commands, such as aliases before
-// expansion, are joined.
+// joinJSONFields accepts `--json number,title` like `--json=number,title`. The word stays a positional
+// argument only when the command neither outputs those fields nor rejects the argument, so a
+// misspelled field lists the available fields. Unknown commands, such as unexpanded aliases, are joined.
 func joinJSONFields(root *cobra.Command, args []string) []string {
 	for i := 0; i < len(args); i++ {
 		if args[i] == "--" {

internal/app/auth.go

@@ -75,8 +75,7 @@ func (a *application) instanceTarget(ctx context.Context) (target, error) {
 	return a.resolveTarget(ctx, false, false)
 }
 
-// credentialLabel describes how an account authenticates: "token, keyring", "OAuth, file store" or
-// "SSH key".
+// credentialLabel describes how an account authenticates, such as "token, keyring".
 func credentialLabel(account settings.Account) string {
 	switch account.AuthMethod {
 	case settings.AuthSSH:
@@ -130,14 +129,9 @@ how to log in, where to keep the token and whether git should use tea for the in
 
 Create a token on the instance under Settings > Applications. Logging in to an account
 that tea already has replaces its stored credential after a confirmation (or with --yes).`,
-		Example: `# Log in interactively
-$ tea auth login
-# Log in with a token from a file or a secret store
+		Example: `$ tea auth login
 $ tea auth login --host gitea.com --with-token < token.txt
-# Log in in the browser, with read-only access to repositories
-$ tea auth login --host gitea.com --oauth --scopes read:repository,read:user
-# Sign requests with an SSH key instead of a token
-$ tea auth login --host gitea.com --ssh-key ~/.ssh/id_ed25519`,
+$ tea auth login --host gitea.com --oauth --scopes read:repository,read:user`,
 		RunE: func(cmd *cobra.Command, _ []string) error {
 			selected := 0
 			for _, chosen := range []bool{withToken, oauth, sshKey != "", sshAgentPrincipal != "", sshAgentKey != ""} {
@@ -377,18 +371,14 @@ func defaultSSHKey() string {
 		return ""
 	}
 	for _, name := range []string{"id_ed25519", "id_ecdsa", "id_rsa"} {
-		if path := filepath.Join(home, ".ssh", name); fileExists(path) {
+		path := filepath.Join(home, ".ssh", name)
+		if _, err := os.Stat(path); err == nil {
 			return path
 		}
 	}
 	return ""
 }
 
-func fileExists(path string) bool {
-	_, err := os.Stat(path)
-	return err == nil
-}
-
 // authStatusRow is one account, or the environment token, that auth status reports.
 type authStatusRow struct {
 	Host      string     `json:"host"`

internal/app/config.go

@@ -194,10 +194,7 @@ ssh_certificate_principal, ssh_key_fingerprint.`}
 	get := &cobra.Command{
 		Use: "get <key>", Short: "Print the value of a setting", Args: argsExact(1), ValidArgsFunction: a.completeConfig,
 		Example: `$ tea config get editor
-# Show where the value comes from
 $ tea config get default_host --show-source
-# Read an instance or account setting
-$ tea config get ssh_host --host https://gitea.com
 $ tea config get ssh_key --host https://gitea.com --user alice`,
 		RunE: func(cmd *cobra.Command, args []string) error {
 			snapshot, err := a.settings()
@@ -259,11 +256,6 @@ $ tea config list --host https://gitea.com`,
 		Use: "set <key> <value>", Short: "Change a setting", Args: argsExact(2), ValidArgsFunction: a.completeConfig,
 		Annotations: textOutput("config set does not return a resource"),
 		Example: `$ tea config set editor "code --wait"
-$ tea config set git_protocol ssh
-# Keep raw markdown and plain IDs on a terminal
-$ tea config set markdown raw
-$ tea config set hyperlinks never
-# Change an instance or account setting
 $ tea config set ssh_host git.example.com:2222 --host https://example.com
 $ tea config set ssh_key ~/.ssh/id_ed25519 --host https://example.com --user alice`,
 		RunE: func(cmd *cobra.Command, args []string) error {

internal/app/errors.go

@@ -145,9 +145,8 @@ func unreachable(err error) string {
 	return ""
 }
 
-// timeoutError words an expired --timeout as "timed out after 4s waiting for run 34" instead
-// of "context deadline exceeded". Other errors are returned unchanged; the result still matches
-// context.DeadlineExceeded, so the exit code stays the same.
+// timeoutError words an expired --timeout as "timed out after 4s waiting for run 34" instead of
+// "context deadline exceeded", keeping the exit code. Other errors are returned unchanged.
 func timeoutError(err error, d time.Duration, format string, args ...any) error {
 	if !errors.Is(err, context.DeadlineExceeded) {
 		return err
@@ -156,7 +155,7 @@ func timeoutError(err error, d time.Duration, format string, args ...any) error
 	if format != "" {
 		text += " " + fmt.Sprintf(format, args...)
 	}
-	return &explainedError{text: text, err: err}
+	return explain(err, "%s", text)
 }
 
 // shortDuration formats d without zero units, such as 1h, 1h30m or 45s.

internal/app/help_topics.go

@@ -153,9 +153,8 @@ func availableCommands(cmd *cobra.Command) []commandList {
 	return append(lists, other, topics)
 }
 
-// helpFlags renders the flags of cmd and the global flags that apply to it: --repo, --remote and --cwd
-// unless it never selects a repository, --json and --jq when it outputs JSON (--jq alone when it
-// filters raw JSON), and --yes when it asks for confirmation. Persistent flags of parent commands, such as --org, count as its own.
+// helpFlags renders the flags of cmd, counting parents' persistent flags such as --org as its own, and
+// the global flags that apply to it: --repo, --remote and --cwd, --json and --jq, and --yes.
 func helpFlags(cmd *cobra.Command) (local, inherited string) {
 	globals := cmd.Root().PersistentFlags()
 	var own []*pflag.Flag

internal/app/human_output.go

@@ -42,8 +42,7 @@ func (a *application) display() terminal.Display {
 	}
 }
 
-// writeHuman pages multi-line human list/view text. JSON callers must not use it.
-// --no-input does not disable paging.
+// writeHuman pages human list and view text; --no-input does not disable paging.
 func (a *application) writeHuman(cmd *cobra.Command, text string) error {
 	preferences, _ := a.preferences()
 	return terminal.WriteHuman(cmd.Context(), a.deps.Streams, preferences.Pager, a.deps.Pager, text)
@@ -76,10 +75,8 @@ type listPage struct {
 	Counted bool
 }
 
-// writeTable writes items as a JSON array, or as a table through the pager. On a TTY the table has
-// a header row and, with a spec Context, a context line that also points at the next page; an empty
-// list prints the spec's Empty message to stderr instead. Piped tables are tab-separated, and the
-// next-page hint goes to stderr.
+// writeTable writes items as a JSON array, or as a table through the pager: on a TTY with a header,
+// the spec's Context line, or its Empty message on stderr; piped as TSV with the next-page hint on stderr.
 func writeTable[T any](a *application, cmd *cobra.Command, items []T, spec listSpec[T], page listPage) error {
 	if a.options.json != "" {
 		return a.writeJSON(cmd, items)