1

I want to let the command \old| refer to the command \| (which produces the output ||.) So I do:

\let\old|\|

LaTeX complains "Missing $ inserted." How can I fix it?

Mika H.
  • 3,451
  • Use \def\old#1{\|} and than you can work with \old| – Marco Daniel Mar 02 '13 at 20:01
  • 4
    A command name is (in default setting) either \<one-char> or \<arbitrary-number-of-letters>. The character | is not a letter. I suggest using \let\oldvert\| . – yo' Mar 02 '13 at 20:04

0 Answers0