Batch file parameter with spaces, double quotes, pipes

Question

I have a batch file that needs to be passed a parameter that will include pipes and spaces. Because of the spaces, double quotes need to be attached to the parameter when pa

Answer 1

@echo off
if "%~2"=="" (
    call %0 "Account|Access Level|Description" dummy
) ELSE (
    setlocal ENABLEEXTENSIONS
    for /F "tokens=*" %%A IN ("%~1") DO @echo.%%A
)

Not exactly pretty, but it works. Dealing with special characters is always a pain in batch files...

Answer 2

You could use delayed expansion, because it doesn't care about special characters.
The only problem is to get parameter content into a variable, as it can only transfer via a percent expansion.
But in your case this should work.

@echo off
setlocal DisableDelayedExpansion
set "str=%~1"
setlocal EnableDelayedExpansion
echo !str!

Remark, I disable first the delayed expansion, so the ! and ^ aren't modified by the expansion of %1

EDIT: The delayed expansion can be disabled or enabled with

setlocal DisableDelayedExpansion
setlocal EnableDelayedExpansion

If enabled, it adds another way of extending variables (!variable! instead of %variable%), primary to prevent the parenthesis block effect of variables (described at set /?).

But the expansion with !variable! also prevents the content of any further parsing, because the delayed expansion is the last phase of batch line parsing.
In detail it is explained at how does the windows command interpreter cmd exe parse scripts