bug#50611: one-byte (write) heap-buffer-underrun

[Paul Eggert]

On 9/16/21 4:34 AM, Pádraig Brady wrote:
> It got me thinking though, that we should not we warning/failing on 
> blank lines.
> I.e., we should be treating blank lines like comments.
> The attached does that.

Thaks, a good improvement. The nerd in me also suggests changing this:

      line[line_length] = '\0';

      /* Ignore blank lines.  */
      if (line_length == 0)
        continue;

to this:

      /* Ignore empty lines.  */
      if (line_length == 0)
        continue;

      line[line_length] = '\0';