Batch file concatenate command line argument

Question

As an example, I created a batch file named concatenate.bat:

@echo off
set foo=%1\bar
echo %foo%

When I run concatenate.bat "C:\somewhere\with spaces"

I want foo to output: "C:\somewhere\with spaces\bar"

But instead I get: "C:\somewhere\with spaces"\bar

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I also tried: set "foo=%1\bar"

Which outputs: "C:\somewhere\with spaces"\bar

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What's the correct way to do this?

Answer 1

@echo off
set foo="%~1\bar"
echo %foo%