Re: Problems with echo. (echo period)

[Eli Zaretskii]

> From: "Dave Korn" <address@hidden>
> Cc: <address@hidden>
> Date: Wed, 18 Apr 2007 00:00:49 +0100
> 
>   Maybe it's something to do with the
> shall-i-invoke-a-shell-command-because-of-redirection-or-other-tricky-stuff
> vs. shall-i-just-invoke-the-command-executable-itself-directly decision stuff?
> 
> static char *sh_cmds_dos[] = { "break", "call", "cd", "chcp", "chdir", "cls",
>                                "copy", "ctty", "date", "del", "dir", "echo",
>                                "erase", "exit", "for", "goto", "if", "md",
>                                "mkdir", "path", "pause", "prompt", "rd",
>                                "rmdir", "rem", "ren", "rename", "set",
>                                "shift", "time", "type", "ver", "verify",
>                                "vol", ":", 0 };
> 
>   That won't match "echo.", no?  Yet it is still definitely a shell builtin.

I thought this was the issue, that's why I asked why is it important
to have "echo.": it just outputs an empty line.  I got a response
which confused me, thus my last message.

Btw, you can have an empty line with cmd's echo if you say `echo""'.