xfor – A reim­ple­men­ta­tion of the LaTeX for-loop macro

The pack­age re­de­fines the LaTeX in­ter­nal \@for macro so that the loop may be pre­ma­turely ter­mi­nated. The ac­tion is akin to the C/Java break state­ment, ex­cept that the loop does not ter­mi­nate un­til the end of the cur­rent it­er­a­tion