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Diffstat (limited to 'txr.1')
-rw-r--r-- | txr.1 | 6 |
1 files changed, 6 insertions, 0 deletions
@@ -1315,6 +1315,12 @@ which translates to a combination of @(cases) and @(require) Multiple clauses are applied to the same input. The one whose effect persists is the one which maximizes or minimizes the length of a particular variable. +.IP @(empty) +The @(empty) directive matches the empty string. It is useful in certain +situations, such as expressing an empty match in a directive that doesn't +accept an empty clause. The @(empty) syntax has another meaning in +@(output) clauses, in conjunctio with @(repeat). + .IP "@(define NAME ( ARGUMENTS ...))" Introduces a function. Functions are discussed in the FUNCTIONS section below. |