Re: Problem with Unbounded Strings

["Jeffrey R. Carter" <spam.jrcarter.not@spam.not.acm.org>]

On 12/04/2015 02:21 PM, Laurent wrote:
> 
> 1st read: 0123456789
> append to the buffer which is empty so content of buffer is: 0123456789
> 
> 2nd read: abcdefghijklmnopqrstuvwxyz
> append to buffer so it becomes: 0123456789abcdefghijklmnopqrstuvwxyz
> 
> 3rd read: ABCDEFGHIJKLMNOPQRSTUVWXYZ
> append to buffer so it would be: 0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ

This is what your code does for me, compiled with GNAT 4.9.2 under Linux Mint
Debian Edition.

One possible explanation is that your file was produced by a Windows system, and
you're running your program on a Unix-based platform. In that case, Get_Line
will return a string with a CR at the end. When displayed, the CR will return
the cursor to the beginning of the line. So you begin by outputting

Buffer after append: 0123456789

You then output the CR, and the cursor returns to the beginning of the line.
Then you output

abcdefghijklmnopqrstuvwxyz

which overwrites everything already displayed through the '4'.

-- 
Jeff Carter
"Well, a gala day is enough for me. I don't think
I can handle any more."
Duck Soup
93