Various kinds of printer functions

When configuring what printer function applies (see Configuring what printer function applies), you can enter a printer function as one of the following:

• A format string, like ‘"$%.2f"’. The result string is right-aligned within the print cell. To get left-alignment, use parentheses: ‘("$%.2f")’.

• A printer can also be a one-argument function, the result of which is a string (to get right alignment) or list of one string (to get left alignment). Such a function can be in turn configured as:

  • A lambda expression, for instance:

    (lambda (x)
      (cond
         ((null x) "")
         ((numberp x) (format "%.2f" x))
         (t (ses-center-span x ?# 'ses-prin1))))

    While typing in a lambda, you can use M-TAB to complete the names of symbols.

  • A symbol referring to a standard printer function (see Standard printer functions).

  • A symbol referring to a local printer function (see Local printer functions).