diff options
| -rw-r--r-- | txr.1 | 9 |
1 files changed, 6 insertions, 3 deletions
@@ -5092,8 +5092,9 @@ The .code gather directive accepts the keyword parameter .codn :vars . -The argument to vars is -a list of required and optional variables. A required variable is specified +The argument to +.code :vars +is a list of required and optional variables. A required variable is specified as a symbol. An optional variable is specified as a two element list which pairs a symbol with a Lisp expression. That Lisp expression is evaluated and specifies the default value for the variable. @@ -5628,7 +5629,9 @@ The default values are expressions, and so can be quasiliterals. Lastly, if in the event that .code collect does not match anything, the variables -specified in vars (whether or not they have a default value) are all bound to +specified in +.code :vars +(whether or not they have a default value) are all bound to empty lists. (These bindings are established after the processing of the .cod3 until / last last clause, if present.) |