diff options
Diffstat (limited to 'txr.1')
| -rw-r--r-- | txr.1 | 12 |
1 files changed, 12 insertions, 0 deletions
@@ -3163,6 +3163,7 @@ and takes various arguments, according to these possibilities: .mets @(next :env) .mets @(next :list << expr ) .mets @(next :string << expr ) +.mets @(next nil) .cble The lone @@ -3306,6 +3307,17 @@ the list which is not an empty input stream, but a stream consisting of one empty line. +The +.code @(next nil) +variant indicates that the following subquery is applied to empty data, +and the list of data sources from the command line is considered empty. +This directive is useful in front of \*(TX code which doesn't process data +sources from the command line, but takes command line arguments. +The +.code @(next nil) +incantation absolutely prevents \*(TX from trying to open the +first command line argument as a data source. + Note that the .code @(next) directive only redirect the source of input over the scope of subquery in which |