golangtabwriter列印垃圾并且格式不正確

我正在嘗試使用 tabwriter 列印幫助訊息：

func printHelp() {
    writer := tabwriter.NewWriter(os.Stdout, 100, 8, 1, ' ', 0)
    fmt.Println(writer, "uni outputs Unicode information for characters.")
    fmt.Println(writer, "USAGE:")
    fmt.Println(writer, "  uni <input>\tOutputs Unicode info for the input.\t")
    fmt.Println(writer, "\tProcesses U xxxx sequences into the appropriate characters and treats control characters as control.\t")
    fmt.Println(writer, "  uni raw <input>\tOutputs Unicode info on the raw unporocessed input.\t")
    fmt.Println(writer, "  uni decomp <input\tOutputs the input with all characters decomposed.\t")
    fmt.Println(writer, "  uni comp <input>\tOutputs the input with all characters composed.\t")
    fmt.Println(writer, "  uni short <input>\tOutputs basic info about the input, one character per line.\t")
    fmt.Println(writer, "  uni rawshort <input>\tOutputs basic info about the raw unprocessed input, one character per line.\t")
    fmt.Println(writer, "  uni help\tPrints this help message.\t")
    writer.Flush()
}

但是，輸出都包含大量不應列印的內部垃圾，并且未正確對齊列。

這是我得到的：

&{0xc000006018 100 8 1 [32 32 32 32 32 32 32 32] 0 [] 0 {0 0 false} 0 [[]] []} uni outputs Unicode information for characters.
&{0xc000006018 100 8 1 [32 32 32 32 32 32 32 32] 0 [] 0 {0 0 false} 0 [[]] []} USAGE:
&{0xc000006018 100 8 1 [32 32 32 32 32 32 32 32] 0 [] 0 {0 0 false} 0 [[]] []}   uni <input>    Outputs Unicode info for the input. 
&{0xc000006018 100 8 1 [32 32 32 32 32 32 32 32] 0 [] 0 {0 0 false} 0 [[]] []}  Processes U xxxx sequences into the appropriate characters and treats control characters as control.    
&{0xc000006018 100 8 1 [32 32 32 32 32 32 32 32] 0 [] 0 {0 0 false} 0 [[]] []}   uni raw <input>    Outputs Unicode info on the raw unporocessed input. 
&{0xc000006018 100 8 1 [32 32 32 32 32 32 32 32] 0 [] 0 {0 0 false} 0 [[]] []}   uni decomp <input  Outputs the input with all characters decomposed.   
&{0xc000006018 100 8 1 [32 32 32 32 32 32 32 32] 0 [] 0 {0 0 false} 0 [[]] []}   uni comp <input>   Outputs the input with all characters composed. 
&{0xc000006018 100 8 1 [32 32 32 32 32 32 32 32] 0 [] 0 {0 0 false} 0 [[]] []}   uni short <input>  Outputs basic info about the input, one character per line. 
&{0xc000006018 100 8 1 [32 32 32 32 32 32 32 32] 0 [] 0 {0 0 false} 0 [[]] []}   uni rawshort <input>   Outputs basic info about the raw unprocessed input, one character per line. 
&{0xc000006018 100 8 1 [32 32 32 32 32 32 32 32] 0 [] 0 {0 0 false} 0 [[]] []}   uni help   Prints this help message.   

這大概就是我想要的

uni outputs Unicode information for characters.
USAGE:
  uni <input>           Outputs Unicode info for the input.
                        Processes U xxxx sequences into the appropriate characters and treats control characters as control.
  uni raw <input>       Outputs Unicdoe info on the raw unporocessed input.
  uni decomp <input     Outputs the input with all characters decomposed.
  uni comp <input>      Outputs the input with all characters composed.
  uni short <input>     Outputs basic info about the input, one character per line.
  uni rawshort <input>  Outputs basic info about the raw unprocessed input, one character per line.
  uni help              Prints this help message.

我已經嘗試將最小單元格寬度更改為各種值，從 0 到數百個，它改變了對齊方式，但沒有達到正常作業的程度。我嘗試過制表符與空格分隔符和右對齊與默認（左）對齊，沒有區別。

uj5u.com熱心網友回復：

要寫入io.Writer使用fmt.Fprintln（或fmt.Fprintf）而不是fmt.Println：

// fmt.Println(writer, "uni outputs Unicode information for characters.")

fmt.Fprintln(writer, "uni outputs Unicode information for characters.")

fmt.Println將盡最大努力呈現每個引數 - 因此您會看到制表符的內部反射狀態。

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