milo: better matching

milo/apis/fuzzyMatch.lua

@@ -0,0 +1,22 @@
+-- Based on Squid's fuzzy search
+-- https://github.com/SquidDev-CC/artist/blob/vnext/artist/lib/match.lua
+--
+-- not very fuzzy anymore
+
+local SCORE_WEIGHT = 1000
+local LEADING_LETTER_PENALTY = -3
+local LEADING_LETTER_PENALTY_MAX = -9
+
+local _find = string.find
+
+return function(str_lower, ptrn_lower)
+  local score = 0
+
+  local start = _find(str_lower, ptrn_lower, 1, true)
+  if start then
+    -- All letters before the current one are considered leading, so add them to our penalty
+    score = SCORE_WEIGHT + math.max(LEADING_LETTER_PENALTY * (start - 1), LEADING_LETTER_PENALTY_MAX)
+  end
+
+  return score
+end