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flags : return HelpError and print at the callsite

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This commit is contained in:
bth 2026-01-29 10:23:11 -08:00
commit d4015598be
9 changed files with 107 additions and 34 deletions
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10
cat/cat.go
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@ -1,6 +1,7 @@
package cat
import (
"errors"
"fmt"
"log"
"os"
@ -82,7 +83,14 @@ func cat(files []string, opts options) (string, error) {
func Cat(args []string) {
opts := initOpts()
flags.ParseArgs(CMD, SUMMARY, args, &opts)
if err := flags.ParseArgs(CMD, SUMMARY, args, &opts); err != nil {
var herr flags.HelpError
if errors.As(err, &herr) {
fmt.Println(herr)
return
}
log.Fatalf("um %s: %s", CMD, err)
}
files, err := pipe.FileListSplitMaybeStdin(opts.Filelist.Val)
if err != nil {
log.Fatalf("um %s: %s", CMD, err)