find: document ! (not) operator
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/findutils/find.c b/findutils/find.c
index 0ec88fd..d49adc2 100644
--- a/findutils/find.c
+++ b/findutils/find.c
@@ -1067,6 +1067,9 @@
//usage: IF_FEATURE_FIND_PAREN(
//usage: "\n ( ACTIONS ) Group actions for -o / -a"
//usage: )
+//usage: IF_FEATURE_FIND_NOT(
+//usage: "\n ! ACT Invert ACT's success/failure"
+//usage: )
//usage: "\n ACT1 [-a] ACT2 If ACT1 fails, stop, else do ACT2"
//usage: "\n ACT1 -o ACT2 If ACT1 succeeds, stop, else do ACT2"
//usage: "\n Note: -a has higher priority than -o"