This package provides a pre-commit git hook to check basic LaTeX syntax for the use of package developers. It is installed by copying it into the .git/.hooks file. It then checks the following file types: .sty, .dtx, .bbx, .cbx, and .lbx. It performs the following checks:

• each line must be terminated by %, without a space before it;

• empty lines are allowed, but not lines with nothing but spaces in them;

• \begin{macro} and \end{macro} must be paired;

• \begin{macrocode} and \end{macrocode} must be paired;

• \begin{macro} must have a second argument;

• one space must be printed between % and \begin{macro} or \end{macro}. % must be the first character in the line;

• four spaces must be printed between % and \begin{macrocode} or \end{macrocode};

• \cs argument must not start with a backslash.