diff options
Diffstat (limited to 'txr.1')
| -rw-r--r-- | txr.1 | 21 |
1 files changed, 19 insertions, 2 deletions
@@ -47666,9 +47666,10 @@ operator. -> ((2 4) (b d)) .brev -.coNP Pattern Operator @ scan +.coNP Pattern Operators @ scan and @ scan-all .synb -.mets @(scan << pattern ) +.mets @(scan << pattern )) +.mets @(scan-all << pattern )) .syne .desc The @@ -47691,6 +47692,14 @@ under .code scan if any suffix of that object matches. +The +.code scan-all +pattern matches the object in the same way. However, instead of +finding the leftmost match, it finds all matches. Every variable +that occurs inside +.meta pattern +is bound to a list of the matches which correspond to that variable. + .TP* Examples: .verb @@ -47728,6 +47737,14 @@ if any suffix of that object matches. '(1 2 3 . #(4 5)) (list x y)) -> (4 5) + + ;; Pattern doesn't match list: + (match @(scan-all (b @x)) '(1 2 3 4 b 5 b 6 7 8) x) + -> error + + ;; x bound to list of items that follow b symbol: + (match @(scan-all (b @x . @nil)) '(1 2 3 4 b 5 b 6 7 8) x) + -> (5 6) .brev .coNP Pattern Operators @ and and @ or |