Options refactoring (#395)

* options.Opt now has a separate options.Flag field.

CHANGELOG.md

@@ -10,15 +10,15 @@ Breaking changes are annotated with ☢️, and alpha/beta features with 🐥.
 
 ## [v0.47.4] - UPCOMING
 
-Minor release with changes to flags.
+Patch release with changes to flags.
 See the earlier [`v0.47.0`](https://github.com/neilotoole/sq/releases/tag/v0.47.0)
 release for recent headline features.
 
 ### Added
 
 - By default, `sq` prints source locations with the password redacted. This is a sensible default, but
-  there are legitimate reasons to access the unredacted connection string. There's a new
+  there are legitimate reasons to access the unredacted connection string. Thus a new
-  global flag `--no-redact` for that (and a corresponding [`redact`](https://sq.io/docs/config#redact) config option).
+  global flag `--no-redact` (and a corresponding [`redact`](https://sq.io/docs/config#redact) config option).
 
   ```shell
   # Default behavior: password is redacted
@@ -30,6 +30,11 @@ release for recent headline features.
   @sakila/pg12  postgres  postgres://sakila:p_ssW0rd@192.168.50.132/sakila
   ```
 
+- Previously, if an error occurred when [`verbose`](https://sq.io/docs/config#verbose) was true,
+  and [`error.format`](https://sq.io/docs/config#errorformat) was `text`, `sq` would print a stack trace 
+  to `stderr`. This was poor default behavior, flooding the user terminal, so the default is now no stack trace.
+  To restore the previous behavior, use the new `-E` (`--error.stack`) flag, or set the [`error.stack`](https://sq.io/docs/config#errorstack) config option.
+
 
 ### Changed
 

cli/cmd_add.go

@@ -26,7 +26,7 @@ import (
 	"github.com/neilotoole/sq/libsq/source/location"
 )
 
-func newSrcAddCmd() *cobra.Command { //nolint:funlen
+func newSrcAddCmd() *cobra.Command {
 	cmd := &cobra.Command{
 		Use:               "add [--handle @HANDLE] LOCATION",
 		RunE:              execSrcAdd,
@@ -172,12 +172,9 @@ More examples:
 	cmd.Flags().BoolP(flag.AddActive, flag.AddActiveShort, false, flag.AddActiveUsage)
 
 	addOptionFlag(cmd.Flags(), driver.OptIngestHeader)
-	// cmd.Flags().Bool(flag.IngestHeader, false, flag.IngestHeaderUsage)
 	addOptionFlag(cmd.Flags(), csv.OptEmptyAsNull)
 	addOptionFlag(cmd.Flags(), csv.OptDelim)
-	// cmd.Flags().Bool(flag.CSVEmptyAsNull, true, flag.CSVEmptyAsNullUsage)
+	panicOn(cmd.RegisterFlagCompletionFunc(csv.OptDelim.Flag().Name, completeStrings(-1, csv.NamedDelims()...)))
-	// cmd.Flags().String(flag.CSVDelim, flag.CSVDelimDefault, flag.CSVDelimUsage)
-	panicOn(cmd.RegisterFlagCompletionFunc(csv.OptDelim.Flag(), completeStrings(-1, csv.NamedDelims()...)))
 
 	return cmd
 }

cli/cmd_diff.go

@@ -18,8 +18,7 @@ import (
 
 var OptDiffNumLines = options.NewInt(
 	"diff.lines",
-	"unified",
+	&options.Flag{Name: "unified", Short: 'U'},
-	'U',
 	3,
 	"Generate diffs with <n> lines of context",
 	`Generate diffs with <n> lines of context, where n >= 0.`,
@@ -28,8 +27,7 @@ var OptDiffNumLines = options.NewInt(
 
 var OptDiffDataFormat = format.NewOpt(
 	"diff.data.format",
-	"format",
+	&options.Flag{Name: "format", Short: 'f'},
-	'f',
 	format.Text,
 	func(f format.Format) error {
 		switch f { //nolint:exhaustive
@@ -187,7 +185,7 @@ The default (3) can be changed via:
 	}
 
 	panicOn(cmd.RegisterFlagCompletionFunc(
-		OptDiffDataFormat.Flag(),
+		OptDiffDataFormat.Flag().Name,
 		completeStrings(-1, stringz.Strings(diffFormats)...),
 	))
 

cli/cmd_ping.go

@@ -26,8 +26,7 @@ import (
 // operations.
 var OptPingCmdTimeout = options.NewDuration(
 	"ping.timeout",
-	"",
+	nil,
-	0,
 	time.Second*10,
 	"ping command timeout duration",
 	"How long the ping command waits before timeout occurs. Example: 500ms or 2m10s.",
@@ -38,8 +37,7 @@ func newPingCmd() *cobra.Command {
 		Use:               "ping [@HANDLE|GROUP]*",
 		RunE:              execPing,
 		ValidArgsFunction: completeHandleOrGroup,
-
+		Short:             "Ping data sources",
-		Short: "Ping data sources",
 		Long: `Ping data sources (or groups of sources) to check connection health.
 If no arguments provided, the active data source is pinged. Otherwise, ping
 the specified sources or groups.

cli/cmd_root.go

@@ -111,12 +111,12 @@ See docs and more: https://sq.io`,
 	cmd.PersistentFlags().String(flag.Config, "", flag.ConfigUsage)
 
 	addOptionFlag(cmd.PersistentFlags(), OptLogEnabled)
-	panicOn(cmd.RegisterFlagCompletionFunc(OptLogEnabled.Flag(), completeBool))
+	panicOn(cmd.RegisterFlagCompletionFunc(OptLogEnabled.Flag().Name, completeBool))
 
 	addOptionFlag(cmd.PersistentFlags(), OptLogFile)
 
 	addOptionFlag(cmd.PersistentFlags(), OptLogLevel)
-	panicOn(cmd.RegisterFlagCompletionFunc(OptLogLevel.Flag(), completeStrings(
+	panicOn(cmd.RegisterFlagCompletionFunc(OptLogLevel.Flag().Name, completeStrings(
 		1,
 		slog.LevelDebug.String(),
 		slog.LevelInfo.String(),
@@ -125,11 +125,14 @@ See docs and more: https://sq.io`,
 	)))
 
 	addOptionFlag(cmd.PersistentFlags(), OptLogFormat)
-	panicOn(cmd.RegisterFlagCompletionFunc(OptLogFormat.Flag(), completeStrings(
+	panicOn(cmd.RegisterFlagCompletionFunc(OptLogFormat.Flag().Name, completeStrings(
 		1,
 		string(format.Text),
 		string(format.JSON),
 	)))
 
+	addOptionFlag(cmd.PersistentFlags(), OptErrorFormat)
+	addOptionFlag(cmd.PersistentFlags(), OptErrorStack)
+
 	return cmd
 }

cli/cmd_slq.go

@@ -325,12 +325,12 @@ func addTextFormatFlags(cmd *cobra.Command) {
 func addQueryCmdFlags(cmd *cobra.Command) {
 	addOptionFlag(cmd.Flags(), OptFormat)
 	panicOn(cmd.RegisterFlagCompletionFunc(
-		OptFormat.Flag(),
+		OptFormat.Flag().Name,
 		completeStrings(-1, stringz.Strings(format.All())...),
 	))
 	addResultFormatFlags(cmd)
 	cmd.MarkFlagsMutuallyExclusive(append(
-		[]string{OptFormat.Flag()},
+		[]string{OptFormat.Flag().Name},
 		flag.OutputFormatFlags...,
 	)...)
 

cli/cmd_sql_test.go

@@ -122,7 +122,7 @@ func TestCmdSQL_SelectFromUserDriver(t *testing.T) {
 func TestCmdSQL_StdinQuery(t *testing.T) {
 	t.Parallel()
 
-	flagIngestHeader := driver.OptIngestHeader.Flag()
+	flagIngestHeader := driver.OptIngestHeader.Flag().Name
 
 	testCases := []struct {
 		fpath     string

cli/complete.go

@@ -24,8 +24,7 @@ import (
 
 var OptShellCompletionTimeout = options.NewDuration(
 	"shell-completion.timeout",
-	"",
+	nil,
-	0,
 	time.Millisecond*500,
 	"Shell completion timeout",
 	`How long shell completion should wait before giving up. This can become relevant
@@ -35,9 +34,7 @@ tables in a source.`,
 
 var OptShellCompletionLog = options.NewBool(
 	"shell-completion.log",
-	"",
+	nil,
-	false,
-	0,
 	false,
 	"Enable logging of shell completion activity",
 	`Enable logging of shell completion activity. This is really only useful for
@@ -50,9 +47,7 @@ timeout triggers logging of errors.`,
 
 var OptShellCompletionGroupFilter = options.NewBool(
 	"shell-completion.group-filter",
-	"",
+	nil,
-	false,
-	0,
 	true,
 	"Shell completion initial source suggestions from active group only",
 	`When true, shell completion initially suggests only sources within the active

cli/config/store.go

@@ -75,8 +75,7 @@ func (DiscardStore) Location() string {
 // OptConfigLockTimeout is the time allowed to acquire the config lock.
 var OptConfigLockTimeout = options.NewDuration(
 	"config.lock.timeout",
-	"",
+	nil,
-	0,
 	time.Second*5,
 	"Wait timeout to acquire config lock",
 	`Wait timeout to acquire the config lock (which prevents multiple sq instances

cli/logging.go

@@ -28,9 +28,7 @@ import (
 var (
 	OptLogEnabled = options.NewBool(
 		"log",
-		"",
+		nil,
-		false,
-		0,
 		false,
 		"Enable logging",
 		"Enable logging.",
@@ -38,8 +36,7 @@ var (
 
 	OptLogFile = options.NewString(
 		"log.file",
-		"",
+		nil,
-		0,
 		getDefaultLogFilePath(),
 		nil,
 		"Log file path",
@@ -55,8 +52,7 @@ var (
 
 	OptLogFormat = format.NewOpt(
 		"log.format",
-		"",
+		nil,
-		0,
 		format.Text,
 		func(f format.Format) error {
 			if f == format.Text || f == format.JSON {
@@ -65,7 +61,7 @@ var (
 
 			return errz.Errorf("option {log.format} allows only %q or %q", format.Text, format.JSON)
 		},
-		"Log output format",
+		"Log output format (text or json)",
 		fmt.Sprintf(
 			`Log output format. Allowed formats are %q (human-friendly) or %q.`, format.Text, format.JSON),
 	)
@@ -216,7 +212,7 @@ func getLogEnabled(ctx context.Context, osArgs []string, cfg *config.Config) boo
 	bootLog := lg.FromContext(ctx)
 	var enabled bool
 
-	flg := OptLogEnabled.Flag()
+	flg := OptLogEnabled.Flag().Name
 	val, ok, err := getBootstrapFlagValue(flg, "", OptLogEnabled.Usage(), osArgs)
 	if err != nil {
 		bootLog.Warn("Reading log 'enabled' from flag", lga.Flag, flg, lga.Err, err)
@@ -275,7 +271,7 @@ func getLogEnabled(ctx context.Context, osArgs []string, cfg *config.Config) boo
 func getLogLevel(ctx context.Context, osArgs []string, cfg *config.Config) slog.Level {
 	bootLog := lg.FromContext(ctx)
 
-	flg := OptLogLevel.Flag()
+	flg := OptLogLevel.Flag().Name
 	val, ok, err := getBootstrapFlagValue(flg, "", OptLogLevel.Usage(), osArgs)
 	if err != nil {
 		bootLog.Warn("Reading log level from flag", lga.Flag, flg, lga.Err, err)
@@ -320,7 +316,7 @@ func getLogLevel(ctx context.Context, osArgs []string, cfg *config.Config) slog.
 func getLogFormat(ctx context.Context, osArgs []string, cfg *config.Config) format.Format {
 	bootLog := lg.FromContext(ctx)
 
-	flg := OptLogFormat.Flag()
+	flg := OptLogFormat.Flag().Name
 	val, ok, err := getBootstrapFlagValue(flg, "", OptLogFormat.Usage(), osArgs)
 	if err != nil {
 		bootLog.Warn("Error reading log format from flag", lga.Flag, flg, lga.Err, err)
@@ -373,7 +369,7 @@ func getLogFormat(ctx context.Context, osArgs []string, cfg *config.Config) form
 func getLogFilePath(ctx context.Context, osArgs []string, cfg *config.Config) string {
 	bootLog := lg.FromContext(ctx)
 
-	flg := OptLogFile.Flag()
+	flg := OptLogFile.Flag().Name
 	fp, ok, err := getBootstrapFlagValue(flg, "", OptLogFile.Usage(), osArgs)
 	if err != nil {
 		bootLog.Warn("Reading log file from flag", lga.Flag, flg, lga.Err, err)
@@ -426,7 +422,7 @@ var _ options.Opt = LogLevelOpt{}
 
 // NewLogLevelOpt returns a new LogLevelOpt instance.
 func NewLogLevelOpt(key string, defaultVal slog.Level, usage, help string) LogLevelOpt {
-	opt := options.NewBaseOpt(key, "", 0, usage, help)
+	opt := options.NewBaseOpt(key, nil, usage, help)
 	return LogLevelOpt{BaseOpt: opt, defaultVal: defaultVal}
 }
 

cli/options.go

@@ -30,7 +30,7 @@ import (
 func getOptionsFromFlags(flags *pflag.FlagSet, reg *options.Registry) (options.Options, error) {
 	o := options.Options{}
 	err := reg.Visit(func(opt options.Opt) error {
-		f := flags.Lookup(opt.Flag())
+		f := flags.Lookup(opt.Flag().Name)
 		if f == nil {
 			return nil
 		}
@@ -47,12 +47,12 @@ func getOptionsFromFlags(flags *pflag.FlagSet, reg *options.Registry) (options.O
 		if bOpt, ok := opt.(options.Bool); ok {
 			// Special handling for bool, because
 			// the flag value could be inverted.
-			val, err := flags.GetBool(bOpt.Flag())
+			val, err := flags.GetBool(bOpt.Flag().Name)
 			if err != nil {
 				return errz.Err(err)
 			}
 
-			if bOpt.FlagInverted() {
+			if bOpt.Flag().Invert {
 				val = !val
 			}
 			o[bOpt.Key()] = val
@@ -154,6 +154,7 @@ func RegisterDefaultOpts(reg *options.Registry) {
 	reg.Add(
 		OptFormat,
 		OptErrorFormat,
+		OptErrorStack,
 		OptDatetimeFormat,
 		OptDatetimeFormatAsNumber,
 		OptDateFormat,
@@ -242,36 +243,37 @@ func filterOptionsForSrc(typ drivertype.Type, opts ...options.Opt) []options.Opt
 // addOptionFlag adds a flag derived from opt to flags, returning the
 // flag name used.
 func addOptionFlag(flags *pflag.FlagSet, opt options.Opt) (key string) {
-	key = opt.Flag()
+	flg := opt.Flag()
+	key = flg.Name
 
 	switch opt := opt.(type) {
 	case options.Int:
-		if opt.Short() == 0 {
+		if flg.Short == 0 {
-			flags.Int(key, opt.Default(), opt.Usage())
+			flags.Int(key, opt.Default(), flg.Usage)
 			return key
 		}
 
-		flags.IntP(key, string(opt.Short()), opt.Default(), opt.Usage())
+		flags.IntP(key, string(flg.Short), opt.Default(), flg.Usage)
 		return key
 	case options.Bool:
 		defVal := opt.Default()
-		if opt.FlagInverted() {
+		if flg.Invert {
 			defVal = !defVal
 		}
-		if opt.Short() == 0 {
+		if flg.Short == 0 {
-			flags.Bool(key, defVal, opt.Usage())
+			flags.Bool(key, defVal, flg.Usage)
 			return key
 		}
 
-		flags.BoolP(key, string(opt.Short()), defVal, opt.Usage())
+		flags.BoolP(key, string(flg.Short), defVal, flg.Usage)
 		return key
 	case options.Duration:
-		if opt.Short() == 0 {
+		if flg.Short == 0 {
-			flags.Duration(key, opt.Default(), opt.Usage())
+			flags.Duration(key, opt.Default(), flg.Usage)
 			return key
 		}
 
-		flags.DurationP(key, string(opt.Short()), opt.Get(nil), opt.Usage())
+		flags.DurationP(key, string(flg.Short), opt.Get(nil), flg.Usage)
 	default:
 		// Treat as string
 	}
@@ -281,12 +283,12 @@ func addOptionFlag(flags *pflag.FlagSet, opt options.Opt) (key string) {
 		defVal = fmt.Sprintf("%v", v)
 	}
 
-	if opt.Short() == 0 {
+	if flg.Short == 0 {
-		flags.String(key, defVal, opt.Usage())
+		flags.String(key, defVal, flg.Usage)
 		return key
 	}
 
-	flags.StringP(key, string(opt.Short()), defVal, opt.Usage())
+	flags.StringP(key, string(flg.Short), defVal, flg.Usage)
 	return key
 }
 

cli/options_test.go

@@ -11,15 +11,12 @@ import (
 )
 
 func TestRegisterDefaultOpts(t *testing.T) {
-	log := lgt.New(t)
 	reg := &options.Registry{}
-
-	log.Debug("options.Registry (before)", "reg", reg)
 	cli.RegisterDefaultOpts(reg)
-	log.Debug("options.Registry (after)", "reg", reg)
+	lgt.New(t).Debug("options.Registry (after)", "reg", reg)
 
 	keys := reg.Keys()
-	require.Len(t, keys, 53)
+	require.Len(t, keys, 54)
 
 	for _, opt := range reg.Opts() {
 		opt := opt
@@ -30,7 +27,8 @@ func TestRegisterDefaultOpts(t *testing.T) {
 			require.NotNil(t, opt.DefaultAny())
 			require.Equal(t, opt.GetAny(nil), opt.DefaultAny())
 			require.NotEmpty(t, opt.Usage())
-			require.True(t, opt.Short() >= 0)
+			require.NotEmpty(t, opt.Flag().Usage)
+			require.True(t, opt.Flag().Short >= 0)
 			require.Equal(t, opt.Key(), opt.String())
 			require.NotEmpty(t, opt.Help())
 		})

cli/output.go

@@ -38,9 +38,7 @@ import (
 var (
 	OptPrintHeader = options.NewBool(
 		"header",
-		"",
+		nil,
-		false,
-		0,
 		true,
 		"Print header row",
 		`Controls whether a header row is printed. This applies only to certain formats,
@@ -50,8 +48,7 @@ such as "text" or "csv".`,
 
 	OptFormat = format.NewOpt(
 		"format",
-		"format",
+		&options.Flag{Short: 'f'},
-		'f',
 		format.Text,
 		nil,
 		"Specify output format",
@@ -66,8 +63,7 @@ command, sq falls back to "text". Available formats:
 
 	OptErrorFormat = format.NewOpt(
 		"error.format",
-		"",
+		nil,
-		0,
 		format.Text,
 		func(f format.Format) error {
 			if f == format.Text || f == format.JSON {
@@ -80,11 +76,19 @@ command, sq falls back to "text". Available formats:
 		fmt.Sprintf(`The format to output errors in. Allowed formats are %q or %q.`, format.Text, format.JSON),
 	)
 
+	OptErrorStack = options.NewBool(
+		"error.stack",
+		&options.Flag{Short: 'E'},
+		false,
+		"Print error stack trace to stderr",
+		`Print error stack trace to stderr. This only applies when error.format is
+"text"; when error.format is "json", the stack trace is always printed.`,
+		options.TagOutput,
+	)
+
 	OptVerbose = options.NewBool(
 		"verbose",
-		"",
+		&options.Flag{Short: 'v'},
-		false,
-		'v',
 		false,
 		"Print verbose output",
 		`Print verbose output.`,
@@ -93,9 +97,7 @@ command, sq falls back to "text". Available formats:
 
 	OptMonochrome = options.NewBool(
 		"monochrome",
-		"",
+		&options.Flag{Short: 'M'},
-		false,
-		'M',
 		false,
 		"Don't print color output",
 		`Don't print color output.`,
@@ -104,9 +106,11 @@ command, sq falls back to "text". Available formats:
 
 	OptRedact = options.NewBool(
 		"redact",
-		"no-redact",
+		&options.Flag{
-		true,
+			Name:   "no-redact",
-		0,
+			Invert: true,
+			Usage:  "Don't redact passwords in output",
+		},
 		true,
 		"Redact passwords in output",
 		`Redact passwords in output.`,
@@ -115,19 +119,20 @@ command, sq falls back to "text". Available formats:
 
 	OptProgress = options.NewBool(
 		"progress",
-		"no-progress",
+		&options.Flag{
+			Name:   "no-progress",
+			Invert: true,
+			Usage:  "Don't show progress bar",
+		},
 		true,
-		0,
+		"Show progress bar for long-running operations",
-		true,
+		`Show progress bar for long-running operations.`,
-		"Progress bar for long-running operations",
-		`Progress bar for long-running operations.`,
 		options.TagOutput,
 	)
 
 	OptProgressDelay = options.NewDuration(
 		"progress.delay",
-		"",
+		nil,
-		0,
 		time.Second*2,
 		"Progress bar render delay",
 		`Delay before showing a progress bar.`,
@@ -135,8 +140,7 @@ command, sq falls back to "text". Available formats:
 
 	OptDebugTrackMemory = options.NewDuration(
 		"debug.stats.frequency",
-		"",
+		nil,
-		0,
 		0,
 		"Memory usage sampling interval.",
 		`Memory usage sampling interval. If non-zero, peak memory usage is periodically
@@ -145,9 +149,7 @@ sampled, and reported on exit. If zero, memory usage sampling is disabled.`,
 
 	OptCompact = options.NewBool(
 		"compact",
-		"",
+		&options.Flag{Short: 'c'},
-		false,
-		'c',
 		false,
 		"Compact instead of pretty-printed output",
 		`Compact instead of pretty-printed output.`,
@@ -156,8 +158,7 @@ sampled, and reported on exit. If zero, memory usage sampling is disabled.`,
 
 	OptTuningFlushThreshold = options.NewInt(
 		"tuning.flush-threshold",
-		"",
+		nil,
-		0,
 		1000,
 		"Output writer buffer flush threshold in bytes",
 		`Size in bytes after which output writers should flush any internal buffer.
@@ -171,8 +172,7 @@ Generally, it is not necessary to fiddle this knob.`,
 
 	OptDatetimeFormat = options.NewString(
 		"format.datetime",
-		"",
+		nil,
-		0,
 		"RFC3339",
 		nil,
 		"Timestamp format: constant such as RFC3339 or a strftime format",
@@ -185,9 +185,7 @@ Generally, it is not necessary to fiddle this knob.`,
 
 	OptDatetimeFormatAsNumber = options.NewBool(
 		"format.datetime.number",
-		"",
+		nil,
-		false,
-		0,
 		true,
 		"Render numeric datetime value as number instead of string",
 		`Render numeric datetime value as number instead of string, if possible. If
@@ -207,8 +205,7 @@ is not an integer.
 
 	OptDateFormat = options.NewString(
 		"format.date",
-		"",
+		nil,
-		0,
 		"DateOnly",
 		nil,
 		"Date format: constant such as DateOnly or a strftime format",
@@ -223,9 +220,7 @@ situation, use format.datetime instead.
 
 	OptDateFormatAsNumber = options.NewBool(
 		"format.date.number",
-		"",
+		nil,
-		false,
-		0,
 		true,
 		"Render numeric date value as number instead of string",
 		`Render numeric date value as number instead of string, if possible. If
@@ -244,8 +239,7 @@ that this option is no-op if the rendered value is not an integer.
 
 	OptTimeFormat = options.NewString(
 		"format.time",
-		"",
+		nil,
-		0,
 		"TimeOnly",
 		nil,
 		"Time format: constant such as TimeOnly or a strftime format",
@@ -260,13 +254,10 @@ situation, use format.datetime instead.
 
 	OptTimeFormatAsNumber = options.NewBool(
 		"format.time.number",
-		"",
+		nil,
-		false,
-		0,
 		true,
 		"Render numeric time value as number instead of string",
-		`
+		`Render numeric time value as number instead of string, if possible. If format.time
-Render numeric time value as number instead of string, if possible. If format.time
 renders a numeric value (e.g. "59"), that value is typically rendered as a string.
 For some output formats, such as JSON, it can be useful to instead render the
 value as a naked number instead of a string. Note that this option is no-op if
@@ -304,7 +295,7 @@ func newWriters(cmd *cobra.Command, clnup *cleanup.Cleanup, o options.Options,
 		Metadata:    tablew.NewMetadataWriter(outCfg.out, outCfg.outPr),
 		Source:      tablew.NewSourceWriter(outCfg.out, outCfg.outPr),
 		Ping:        tablew.NewPingWriter(outCfg.out, outCfg.outPr),
-		Error:       tablew.NewErrorWriter(outCfg.errOut, outCfg.errOutPr),
+		Error:       tablew.NewErrorWriter(outCfg.errOut, outCfg.errOutPr, OptErrorStack.Get(o)),
 		Version:     tablew.NewVersionWriter(outCfg.out, outCfg.outPr),
 		Config:      tablew.NewConfigWriter(outCfg.out, outCfg.outPr),
 	}

cli/output/format/opt.go

@@ -9,10 +9,10 @@ var _ options.Opt = Opt{}
 
 // NewOpt returns a new format.Opt instance. If validFn is non-nil, it
 // is executed against possible values.
-func NewOpt(key, flag string, short rune, defaultVal Format,
+func NewOpt(key string, flag *options.Flag, defaultVal Format,
 	validFn func(Format) error, usage, help string,
 ) Opt {
-	opt := options.NewBaseOpt(key, flag, short, usage, help, options.TagOutput)
+	opt := options.NewBaseOpt(key, flag, usage, help, options.TagOutput)
 	return Opt{BaseOpt: opt, defaultVal: defaultVal, validFn: validFn}
 }
 

cli/output/outputx/outputx.go

@@ -20,7 +20,8 @@ type VerboseOpt struct { //nolint:govet // field alignment
 	IsSet        bool   `json:"is_set"`
 	DefaultValue any    `json:"default_value"`
 	Value        any    `json:"value"`
-	Help         string `json:"help"`
+	// FIXME: Add Flag?
+	Help string `json:"help"`
 }
 
 // NewVerboseOpt returns a VerboseOpt built from opt and o.

cli/output/tablew/errorwriter.go

@@ -12,20 +12,21 @@ import (
 
 // errorWriter implements output.ErrorWriter.
 type errorWriter struct {
-	w  io.Writer
+	w          io.Writer
-	pr *output.Printing
+	pr         *output.Printing
+	stacktrace bool
 }
 
 // NewErrorWriter returns an output.ErrorWriter that
 // outputs in text format.
-func NewErrorWriter(w io.Writer, pr *output.Printing) output.ErrorWriter {
+func NewErrorWriter(w io.Writer, pr *output.Printing, stacktrace bool) output.ErrorWriter {
-	return &errorWriter{w: w, pr: pr}
+	return &errorWriter{w: w, pr: pr, stacktrace: stacktrace}
 }
 
 // Error implements output.ErrorWriter.
 func (w *errorWriter) Error(systemErr, humanErr error) {
 	fmt.Fprintln(w.w, w.pr.Error.Sprintf("sq: %v", humanErr))
-	if !w.pr.Verbose {
+	if !w.stacktrace {
 		return
 	}
 

cli/output/xlsxw/datetime.go

@@ -14,8 +14,7 @@ var (
 	// OptDatetimeFormat is Excel's custom datetime format string.
 	OptDatetimeFormat = options.NewString(
 		"format.excel.datetime",
-		"",
+		nil,
-		0,
 		"yyyy-mm-dd hh:mm",
 		func(s string) error {
 			err := validateDatetimeFormatString(s)
@@ -38,8 +37,7 @@ Examples:
 	// OptDateFormat is Excel's custom date-only format string.
 	OptDateFormat = options.NewString(
 		"format.excel.date",
-		"",
+		nil,
-		0,
 		"yyyy-mm-dd",
 		func(s string) error {
 			err := validateDatetimeFormatString(s)
@@ -60,8 +58,7 @@ Examples:
 	// OptTimeFormat is Excel's custom time format string.
 	OptTimeFormat = options.NewString(
 		"format.excel.time",
-		"",
+		nil,
-		0,
 		"hh:mm:ss",
 		func(s string) error {
 			err := validateDatetimeFormatString(s)

drivers/csv/ingest.go

@@ -26,9 +26,7 @@ import (
 // or as the zero value for the kind of that field.
 var OptEmptyAsNull = options.NewBool(
 	"driver.csv.empty-as-null",
-	"",
+	nil,
-	false,
-	0,
 	true,
 	"Treat ingest empty CSV fields as NULL",
 	`When true, empty CSV fields are treated as NULL. When false,
@@ -41,8 +39,7 @@ the zero value for that type is used, e.g. empty string or 0.`,
 // OptDelim specifies the CSV delimiter to use.
 var OptDelim = options.NewString(
 	"driver.csv.delim",
-	"",
+	nil,
-	0,
 	delimCommaKey,
 	nil,
 	"Delimiter for ingest CSV data",

libsq/core/options/opt.go

@@ -46,18 +46,13 @@ type Opt interface {
 	// Key returns the Opt key, such as "ping.timeout".
 	Key() string
 
-	// Flag is the long flag name to use, which is typically the same value
+	// Flag is the computed flag config for the Opt.
-	// as returned by Opt.Key. However, a distinct value can be supplied, such
+	Flag() Flag
-	// that flag usage and config usage have different keys. For example,
-	// an Opt might have a key "diff.num-lines", but a flag "lines".
-	Flag() string
-
-	// Short is the short key. The zero value indicates no short key.
-	// For example, if the key is "json", the short key could be 'j'.
-	Short() rune
 
 	// Usage is a one-line description of the Opt. Additional detail can be
-	// found in Help.
+	// found in Help. It is typically the case that [Flag.Usage] is the same value
+	// as Usage, but it can be overridden if the flag usage text should differ
+	// from the Opt usage text.
 	Usage() string
 
 	// Help returns the Opt's help text, which typically provides more detail
@@ -93,34 +88,63 @@ type Opt interface {
 	Process(o Options) (Options, error)
 }
 
+// Flag describe an Opt's behavior as a command-line flag. It can be passed to
+// the "NewX" Opt constructor functions, e.g. [NewBool], to override the Opt's
+// flag configuration. The computed Flag value is available via Opt.Flag.
+// It is common to pass a nil *Flag to the Opt constructors; the value returned
+// by Opt.Flag will be appropriately populated with default values.
+type Flag struct {
+	// Name is the flag name to use. Defaults to [Opt.Key].
+	Name string
+
+	// Usage is the flag's usage text. Defaults to [Opt.Usage], but can be
+	// overridden if the flag usage text should differ from the [Opt] usage text.
+	// This is typically only the case when [Flag.Invert] is true.
+	Usage string
+
+	// Short is the short flag name, e.g. 'v' for "verbose". The zero value
+	// indicates no short name.
+	Short rune
+
+	// Invert indicates that the flag's boolean value is inverted vs the flag
+	// name. For example, if [Opt.Key] is "progress", but [Flag.Name] is
+	// "no-progress", then [Flag.Invert] should be true. This field is ignored for
+	// non-boolean [Opt] types.
+	Invert bool
+}
+
 // BaseOpt is a partial implementation of options.Opt that concrete
 // types can build on.
 type BaseOpt struct {
+	flag  Flag
 	key   string
-	flag  string
 	usage string
 	help  string
 	tags  []string
-	short rune
 }
 
-// NewBaseOpt returns a new BaseOpt. If flag is empty string, key is
+// NewBaseOpt returns a new BaseOpt.
-// used as the flag value.
+func NewBaseOpt(key string, flag *Flag, usage, help string, tags ...string) BaseOpt {
-func NewBaseOpt(key, flag string, short rune, usage, help string, tags ...string) BaseOpt {
-	if flag == "" {
-		flag = key
-	}
-
 	slices.Sort(tags)
 
-	return BaseOpt{
+	opt := BaseOpt{
 		key:   key,
-		flag:  flag,
-		short: short,
 		usage: usage,
 		help:  help,
 		tags:  tags,
 	}
+
+	if flag != nil {
+		opt.flag = *flag
+	}
+	if opt.flag.Name == "" {
+		opt.flag.Name = key
+	}
+	if opt.flag.Usage == "" {
+		opt.flag.Usage = usage
+	}
+
+	return opt
 }
 
 // Key implements options.Opt.
@@ -129,15 +153,10 @@ func (op BaseOpt) Key() string {
 }
 
 // Flag implements options.Opt.
-func (op BaseOpt) Flag() string {
+func (op BaseOpt) Flag() Flag {
 	return op.flag
 }
 
-// Short implements options.Opt.
-func (op BaseOpt) Short() rune {
-	return op.short
-}
-
 // Usage implements options.Opt.
 func (op BaseOpt) Usage() string {
 	return op.usage
@@ -190,16 +209,16 @@ func (op BaseOpt) Process(o Options) (Options, error) {
 
 var _ Opt = String{}
 
-// NewString returns an options.String instance. If flag is empty, the
+// NewString returns an options.String instance. If validFn is non-nil, it is
-// value of key is used. If valid Fn is non-nil, it is called from
+// called by [String.Process].
-// the process function.
+func NewString(key string, flag *Flag, defaultVal string, validFn func(string) error,
-//
+	usage, help string, tags ...string,
-//nolint:revive
-func NewString(key, flag string, short rune, defaultVal string,
-	validFn func(string) error, usage, help string, tags ...string,
 ) String {
+	if flag == nil {
+		flag = &Flag{}
+	}
 	return String{
-		BaseOpt:    NewBaseOpt(key, flag, short, usage, help, tags...),
+		BaseOpt:    NewBaseOpt(key, flag, usage, help, tags...),
 		defaultVal: defaultVal,
 		validFn:    validFn,
 	}
@@ -275,11 +294,14 @@ func (op String) Process(o Options) (Options, error) {
 
 var _ Opt = Int{}
 
-// NewInt returns an options.Int instance. If flag is empty, the
+// NewInt returns an options.Int instance.
-// value of key is used.
+func NewInt(key string, flag *Flag, defaultVal int, usage, help string, tags ...string) Int {
-func NewInt(key, flag string, short rune, defaultVal int, usage, help string, tags ...string) Int {
+	if flag == nil {
+		flag = &Flag{}
+	}
+
 	return Int{
-		BaseOpt:    NewBaseOpt(key, flag, short, usage, help, tags...),
+		BaseOpt:    NewBaseOpt(key, flag, usage, help, tags...),
 		defaultVal: defaultVal,
 	}
 }
@@ -403,32 +425,25 @@ func (op Int) Process(o Options) (Options, error) {
 
 var _ Opt = Bool{}
 
-// NewBool returns an options.Bool instance. If flag is empty, the value
+// NewBool returns an options.Bool instance. If arg flag is non-nil and
-// of key is used. If invertFlag is true, the flag's boolean value
+// [Flag.Invert] is true, the flag's boolean value is inverted to set the option.
-// is inverted to set the option. For example, if the Opt is "progress",
+// For example, if [Opt.Key] is progress, and [Flag.Name] is "--no-progress",
-// and the flag is "--no-progress", then invertFlag should be true.
+// then [Flag.Invert] should be true.
-func NewBool(key, flag string, invertFlag bool, short rune, //nolint:revive
+func NewBool(key string, flag *Flag, defaultVal bool, usage, help string, tags ...string) Bool {
-	defaultVal bool, usage, help string, tags ...string,
+	if flag == nil {
-) Bool {
+		flag = &Flag{}
+	}
+
 	return Bool{
-		BaseOpt:      NewBaseOpt(key, flag, short, usage, help, tags...),
+		BaseOpt:    NewBaseOpt(key, flag, usage, help, tags...),
-		defaultVal:   defaultVal,
+		defaultVal: defaultVal,
-		flagInverted: invertFlag,
 	}
 }
 
 // Bool is an options.Opt for type bool.
 type Bool struct {
 	BaseOpt
-	defaultVal   bool
+	defaultVal bool
-	flagInverted bool
-}
-
-// FlagInverted returns true Opt value is the inverse of the flag value.
-// For example, if the Opt is "progress", and the flag is "--no-progress",
-// then FlagInverted will return true.
-func (op Bool) FlagInverted() bool {
-	return op.flagInverted
 }
 
 // GetAny implements options.Opt.
@@ -519,13 +534,16 @@ func (op Bool) Process(o Options) (Options, error) {
 
 var _ Opt = Duration{}
 
-// NewDuration returns an options.Duration instance. If flag is empty, the
+// NewDuration returns an options.Duration instance.
-// value of key is used.
+func NewDuration(key string, flag *Flag, defaultVal time.Duration,
-func NewDuration(key, flag string, short rune, defaultVal time.Duration,
 	usage, help string, tags ...string,
 ) Duration {
+	if flag == nil {
+		flag = &Flag{}
+	}
+
 	return Duration{
-		BaseOpt:    NewBaseOpt(key, flag, short, usage, help, tags...),
+		BaseOpt:    NewBaseOpt(key, flag, usage, help, tags...),
 		defaultVal: defaultVal,
 	}
 }

libsq/core/options/options_test.go

@@ -69,7 +69,7 @@ func TestInt(t *testing.T) {
 		t.Run(tu.Name(i, tc.key), func(t *testing.T) {
 			reg := &options.Registry{}
 
-			opt := options.NewInt(tc.key, "", 0, tc.defaultVal, "", "")
+			opt := options.NewInt(tc.key, nil, tc.defaultVal, "", "")
 			reg.Add(opt)
 
 			o := options.Options{tc.key: tc.input}
@@ -115,7 +115,7 @@ func TestBool(t *testing.T) {
 		t.Run(tu.Name(i, tc.key), func(t *testing.T) {
 			reg := &options.Registry{}
 
-			opt := options.NewBool(tc.key, "", false, 0, tc.defaultVal, "", "")
+			opt := options.NewBool(tc.key, nil, tc.defaultVal, "", "")
 			reg.Add(opt)
 
 			o := options.Options{tc.key: tc.input}
@@ -156,8 +156,8 @@ func TestOptions_LogValue(t *testing.T) {
 }
 
 func TestEffective(t *testing.T) {
-	optHello := options.NewString("hello", "", 0, "world", nil, "", "")
+	optHello := options.NewString("hello", nil, "world", nil, "", "")
-	optCount := options.NewInt("count", "", 0, 1, "", "")
+	optCount := options.NewInt("count", nil, 1, "", "")
 
 	in := options.Options{"count": 7}
 	want := options.Options{"count": 7, "hello": "world"}

libsq/core/progress/progress.go

@@ -464,8 +464,7 @@ func barRenderDelay(b *Bar, d time.Duration) <-chan struct{} {
 // progress impl is stable.
 var OptDebugSleep = options.NewDuration(
 	"debug.progress.sleep",
-	"",
+	nil,
-	0,
 	0,
 	"DEBUG: Sleep during operations to facilitate testing progress bars",
 	`DEBUG: Sleep during operations to facilitate testing progress bars.`,

libsq/driver/ingest.go

@@ -12,9 +12,7 @@ import (
 // If not set, the ingester *may* try to detect if the input has a header.
 var OptIngestHeader = options.NewBool(
 	"ingest.header",
-	"",
+	nil,
-	false,
-	0,
 	false,
 	"Ingest data has a header row",
 	`Specifies whether ingested data has a header row or not.
@@ -28,9 +26,11 @@ to detect the header.`,
 // OptIngestCache specifies whether ingested data is cached or not.
 var OptIngestCache = options.NewBool(
 	"ingest.cache",
-	"no-cache",
+	&options.Flag{
-	true,
+		Name:   "no-cache",
-	0,
+		Invert: true,
+		Usage:  "Don't cache ingest data",
+	},
 	true,
 	"Cache ingest data",
 	`Specifies whether ingested data is cached or not, on a default or per-source
@@ -43,8 +43,7 @@ ingested each time.
   $ sq config set ingest.cache false
 
   # Set ingest caching behavior for a specific source
-  $ sq config set --src @sakila ingest.cache false
+  $ sq config set --src @sakila ingest.cache false`,
-`,
 	options.TagSource,
 )
 
@@ -52,8 +51,7 @@ ingested each time.
 // should take to determine ingest data type.
 var OptIngestSampleSize = options.NewInt(
 	"ingest.sample-size",
-	"",
+	nil,
-	0,
 	256,
 	"Ingest data sample size for type detection",
 	`Specify the number of samples that a detector should take to determine type.`,
@@ -64,8 +62,7 @@ var OptIngestSampleSize = options.NewInt(
 // OptIngestColRename transforms a column name in ingested data.
 var OptIngestColRename = options.NewString(
 	"ingest.column.rename",
-	"",
+	nil,
-	0,
 	"{{.Name}}{{with .Recurrence}}_{{.}}{{end}}",
 	func(s string) error {
 		return stringz.ValidTemplate("ingest.column.rename", s)

libsq/driver/opts.go

@@ -25,8 +25,7 @@ var (
 	// OptConnMaxOpen controls sql.DB.SetMaxOpenConn.
 	OptConnMaxOpen = options.NewInt(
 		"conn.max-open",
-		"",
+		nil,
-		0,
 		0,
 		"Max open connections to DB",
 		`Maximum number of open connections to the database.
@@ -39,8 +38,7 @@ A value of zero indicates no limit.`,
 	// OptConnMaxIdle controls sql.DB.SetMaxIdleConns.
 	OptConnMaxIdle = options.NewInt(
 		"conn.max-idle",
-		"",
+		nil,
-		0,
 		2,
 		"Max connections in idle connection pool",
 		`Set the maximum number of connections in the idle connection pool. If
@@ -55,8 +53,7 @@ If n <= 0, no idle connections are retained.`,
 	// OptConnMaxIdleTime controls sql.DB.SetConnMaxIdleTime.
 	OptConnMaxIdleTime = options.NewDuration(
 		"conn.max-idle-time",
-		"",
+		nil,
-		0,
 		time.Second*2,
 		"Max connection idle time",
 		`Sets the maximum amount of time a connection may be idle. Expired connections
@@ -70,8 +67,7 @@ If n <= 0, connections are not closed due to a connection's idle time.`,
 	// OptConnMaxLifetime controls sql.DB.SetConnMaxLifetime.
 	OptConnMaxLifetime = options.NewDuration(
 		"conn.max-lifetime",
-		"",
+		nil,
-		0,
 		time.Minute*10,
 		"Max connection lifetime",
 		`
@@ -86,8 +82,7 @@ If n <= 0, connections are not closed due to a connection's age.`,
 	// OptConnOpenTimeout controls connection open timeout.
 	OptConnOpenTimeout = options.NewDuration(
 		"conn.open-timeout",
-		"",
+		nil,
-		0,
 		time.Second*10,
 		"Connection open timeout",
 		"Max time to wait before a connection open timeout occurs.",
@@ -99,8 +94,7 @@ If n <= 0, connections are not closed due to a connection's age.`,
 	// between retries.
 	OptMaxRetryInterval = options.NewDuration(
 		"retry.max-interval",
-		"",
+		nil,
-		0,
 		time.Second*3,
 		"Max interval between retries",
 		`The maximum interval to wait between retries. If an operation is
@@ -113,8 +107,7 @@ operations back off, typically using a Fibonacci backoff.`,
 	// by an errgroup.
 	OptTuningErrgroupLimit = options.NewInt(
 		"tuning.errgroup-limit",
-		"",
+		nil,
-		0,
 		16,
 		"Max goroutines in any one errgroup",
 		`Controls the maximum number of goroutines that can be spawned by an errgroup.
@@ -132,8 +125,7 @@ etc.`,
 	// insertion/writing.
 	OptTuningRecChanSize = options.NewInt(
 		"tuning.record-buffer",
-		"",
+		nil,
-		0,
 		1024,
 		"Size of record buffer",
 		`Controls the size of the buffer channel for record insertion/writing.`,

libsq/driver/record.go

@@ -602,8 +602,7 @@ func mungeSetZeroValue(i int, rec []any, destMeta record.Meta) {
 // OptResultColRename transforms a column name returned from the DB.
 var OptResultColRename = options.NewString(
 	"result.column.rename",
-	"",
+	nil,
-	0,
 	"{{.Name}}{{with .Recurrence}}_{{.}}{{end}}",
 	func(s string) error {
 		return stringz.ValidTemplate("result.column.rename", s)

libsq/files/cache.go

@@ -30,8 +30,7 @@ import (
 // See also: driver.OptIngestCache.
 var OptCacheLockTimeout = options.NewDuration(
 	"cache.lock.timeout",
-	"",
+	nil,
-	0,
 	time.Second*5,
 	"Wait timeout to acquire cache lock",
 	`Wait timeout to acquire cache lock. During this period, retry will occur

libsq/files/download.go

@@ -19,8 +19,7 @@ import (
 var (
 	OptHTTPRequestTimeout = options.NewDuration(
 		"http.request.timeout",
-		"",
+		nil,
-		0,
 		time.Second*10,
 		"HTTP/S request initial response timeout duration",
 		`How long to wait for initial response from a HTTP/S endpoint before timeout
@@ -32,8 +31,7 @@ Contrast with http.response.timeout.`,
 	)
 	OptHTTPResponseTimeout = options.NewDuration(
 		"http.response.timeout",
-		"",
+		nil,
-		0,
 		0,
 		"HTTP/S request completion timeout duration",
 		`How long to wait for the entire HTTP transaction to complete. This includes
@@ -45,9 +43,7 @@ Contrast with http.request.timeout.`,
 	)
 	OptHTTPSInsecureSkipVerify = options.NewBool(
 		"https.insecure-skip-verify",
-		"",
+		nil,
-		false,
-		0,
 		false,
 		"Skip HTTPS TLS verification",
 		"Skip HTTPS TLS verification. Useful when downloading against self-signed certs.",

libsq/files/internal/downloader/downloader.go

@@ -33,9 +33,7 @@ import (
 
 var OptContinueOnError = options.NewBool(
 	"download.refresh.ok-on-err",
-	"",
+	nil,
-	false,
-	0,
 	true,
 	"Continue with stale download if refresh fails",
 	`Continue with stale download if refresh fails. This option applies if a download
@@ -48,9 +46,7 @@ download when the network is unavailable. If false, an error is returned instead
 
 var OptCache = options.NewBool(
 	"download.cache",
-	"",
+	nil,
-	false,
-	0,
 	true,
 	"Cache downloads",
 	`Cache downloaded remote files. When false, the download cache is not used and