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Re: Bugreport builtin command 'read'


From: address@hidden
Subject: Re: Bugreport builtin command 'read'
Date: Thu, 04 Jan 2018 15:34:40 +0100

Am Donnerstag, 4. Januar 2018, 14:43:02 CET schrieb Greg Wooledge:
> On Thu, Jan 04, 2018 at 11:24:30AM +0100, address@hidden wrote:
> > # Bug 1?:   +Option read -n1
> > - Cursor doesn't jump automaticly to next line
> 
> It's not supposed to.  If you want that, just do an "echo" after the
> read.

Okay, I assumed it wasn't a bug. But it's not optimal either.

Without the -n option, the read command is always terminated with a line break, 
so 
the following example works well.

while read -p "Select! (y/n): "; do
        case "$REPLY" in
                [yY])   echo "Yes selected!"; break ;;
                [nN])   echo "No selected!"; break ;;
        esac
done

With the -n option you have to rewrite the whole example as follows to make it 
work 
the same way.

while read -n1 -p "Select! (y/n): "; do
        case "$REPLY" in
                [yY])   echo -e "\nYes selected!"; break ;;
                [nN])   echo -e "\nNo selected!"; break ;;
                '')             continue ;;     # Here no additional 
command 'echo'
                *)              echo ;;
        esac
done

Maybe you could change this so that you only change the -n option and not the 
whole construct afterwards. I see no reason why the read command should react 
differently with this option.


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