diff options
| -rw-r--r-- | search.lua | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/search.lua b/search.lua index dab7e1f..fe57ac9 100644 --- a/search.lua +++ b/search.lua @@ -131,6 +131,7 @@ end -- Particularly if we only care about literal matches, we don't need all of string.find function rfind(s, pat, i, plain) if s == nil then return end + if #pat == 0 then return #s end local rs = s:reverse() local rpat = pat:reverse() if i == nil then i = #s end @@ -143,6 +144,7 @@ function rfind(s, pat, i, plain) end function test_rfind() + check_eq(rfind('abc', ''), 3, 'empty pattern') check_eq(rfind('abc', 'c'), 3, 'final char') check_eq(rfind('acbc', 'c', 3), 2, 'previous char') check_nil(rfind('abc', 'd'), 'missing char') |