diff options
Diffstat (limited to 'txr.1')
| -rw-r--r-- | txr.1 | 30 |
1 files changed, 29 insertions, 1 deletions
@@ -42464,9 +42464,12 @@ next one. If there is no next input source, .code awk terminates. -.coNP Macro @ rng +.coNP Macros @, rng @, -rng @ rng- and @ -rng- .synb .mets (rng < from-condition << to-condition ) +.mets (-rng < from-condition << to-condition ) +.mets (rng- < from-condition << to-condition ) +.mets (-rng- < from-condition << to-condition ) .syne .desc The awk macro @@ -42483,6 +42486,31 @@ is found to be true, and ends when is true. Over this interval, range is said to be .IR active . +The +.code rng +macro's result value is true for the starting record which matches +.metn from-condition , +the final record which matches +.metn to-condition , +and all records in between, if any. +The remaining macros work exactly like +.codn rng , +identifying the active range in the same manner. They differ +in that the Boolean value they produce excludes the starting record, +final record, or both, depending on which macro. The +.code -rng +macro yields +.code nil +for the initial record. The +.code rng- +macro yields +.code nil +for the final record. The +.code -rng- +macro yields +.code nil +for both the initial and final record. + Ranges expressed using .code rng may combine with other expressions, including |