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| author | Leah Neukirchen <leah@vuxu.org> | 2017-11-12 21:22:09 +0100 |
|---|---|---|
| committer | Leah Neukirchen <leah@vuxu.org> | 2017-11-12 21:22:09 +0100 |
| commit | 589243c74c93bef948dfdd2dc3613041c58b6918 (patch) | |
| tree | 98a1c974c467f12422cad5f02b3bb8e2eac8d84d | |
| parent | 6d84edf84c184db1ef01243320441f7111ffb548 (diff) | |
| download | lr-589243c74c93bef948dfdd2dc3613041c58b6918.tar.gz lr-589243c74c93bef948dfdd2dc3613041c58b6918.tar.xz lr-589243c74c93bef948dfdd2dc3613041c58b6918.zip | |
add action 'skip' which is always false
| -rw-r--r-- | NEWS.md | 3 | ||||
| -rw-r--r-- | README.md | 1 | ||||
| -rw-r--r-- | lr.1 | 1 | ||||
| -rw-r--r-- | lr.c | 5 |
4 files changed, 10 insertions, 0 deletions
diff --git a/NEWS.md b/NEWS.md index 6b2968e..7732c35 100644 --- a/NEWS.md +++ b/NEWS.md @@ -2,6 +2,9 @@ * Feature: new option `-B` for breadth first traversal. * Feature: new syntax `? :` for ternary operator. +* Feature: new action `skip` which is always false. + The common find(1) idiom `-name x -prune -o -print` + is now best written as `name = "x" ? prune && skip : print`. * Significant speed-up as tsearch is not used anymore. ## 1.1 (2017-10-29) diff --git a/README.md b/README.md index eb21a3c..643e9bf 100644 --- a/README.md +++ b/README.md @@ -150,6 +150,7 @@ Default: `n`. | <modetest> | prune -- do not traverse into subdirectories | print -- always true value + | skip -- always true value | color <num> -- always true value, override 256-color <timeprop> ::= atime | ctime | mtime diff --git a/lr.1 b/lr.1 index a51a95b..fac5493 100644 --- a/lr.1 +++ b/lr.1 @@ -295,6 +295,7 @@ tests are given by the following EBNF: | <modetest> | prune -- do not traverse into subdirectories | print -- always true value + | skip -- always false value | color <num> -- always true value, override 256-color <timeprop> ::= atime | ctime | mtime diff --git a/lr.c b/lr.c index 87aefb4..08d849f 100644 --- a/lr.c +++ b/lr.c @@ -417,6 +417,11 @@ parse_inner() } else if (token("print")) { struct expr *e = mkexpr(EXPR_PRINT); return e; + } else if (token("skip")) { + struct expr *e = mkexpr(EXPR_PRINT); + struct expr *not = mkexpr(EXPR_NOT); + not->a.expr = e; + return not; } else if (token("color")) { struct expr *e = mkexpr(EXPR_COLOR); int64_t n; |