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When you first enter a command at the command prompt, in an alias or function definition, or in a batch file, it can be up to 65,535 characters long.

 

As TCC scans the command line and substitutes the contents of aliases user defined functions, and environment variables for their names, the line usually gets longer. This expanded line is limited to 131,071 characters. If your use of aliases, user defined functions, or environment variables causes the command line to exceed the applicable one of these limits as it is expanded, you will see a Command line too long error and the remainder of the line will not be executed.

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