The page: echo.html

[jeb]

Hi Simon,

the description on the echo.html can be improved.

A more robust alternative is to separate with : instead of a space.
ECHO:%_department%

This might be more robust, but still not good

It fails for

Code: Select all

set "var=\..\..\..\..\windows\system32\calc.exe"
echo:%var%

The best and only safe echo character version is "echo("

Using Echo:in this way does have some limitations:
If the variable does not exist, ECHO: will return the variable name"%_var%"

This is only true in the command line context, in a batch file this works flawlessly.
It has nothing to do with the "echo:" command, it's only an effect of the different variable expansion rules in the command line context.

jeb

[Simon Sheppard]

OK have updated the ECHO page now, Thanks!

[jeb]

Thanks,
but there is still a flaw on the page.

There are some edge cases (such as adding \..\..\..\..\ to a variable) where only ( will work without errors e.g. Echo (%_var%

There is a space between "ECHO" and "(", but there shouldn't.

Better:

... where only "(" will work without errors e.g. ECHO(%var%

[Simon Sheppard]

Ah good catch, I changed that now. Thanks again.