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Rules / Build

Rule id
command-already-defined
Check
Build
Severity
error

In a terminal: overfull explain command-already-defined

Command already defined

\newcommand tried to define a name that already exists.

Fix

‸Choose another name, or use \renewcommand deliberately.

Other build rules

  • Unknown command
  • Math symbol outside math mode
  • Missing brace
  • Extra closing brace
  • Unclosed command argument
  • Package or class not installed
  • Input file not found
  • Package loaded twice with different options

Overfull

A free preflight kit for LaTeX papers and theses. It checks the build, the PDF, the references, accessibility and venue rules, whether you write by hand or with a coding agent.

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