fixed stemming words ending with letter 'y' according to Porter2 algorithm (step 1c)

Author: MihaiValentin

lib/stemmer.js

@@ -106,13 +106,12 @@ lunr.stemmer = (function(){
       }
     }
 
-    // Step 1c
-    re = /^(.+?)y$/;
+    // Step 1c - replace suffix y or Y by i if preceded by a non-vowel which is not the first letter of the word (so cry -> cri, by -> by, say -> say)
+    re = /^(.+?[^aeiou])y$/;
     if (re.test(w)) {
       var fp = re.exec(w);
       stem = fp[1];
-      re = new RegExp(s_v);
-      if (re.test(stem)) { w = stem + "i"; }
+      w = stem + "i";
     }
 
     // Step 2

test/fixtures/stemming_vocab.json

@@ -1 +1 @@
-var stemmingFixture = {"consign":"consign","consigned":"consign","consigning":"consign","consignment":"consign","consist":"consist","consisted":"consist","consistency":"consist","consistent":"consist","consistently":"consist","consisting":"consist","consists":"consist","consolation":"consol","consolations":"consol","consolatory":"consolatori","console":"consol","consoled":"consol","consoles":"consol","consolidate":"consolid","consolidated":"consolid","consolidating":"consolid","consoling":"consol","consols":"consol","consonant":"conson","consort":"consort","consorted":"consort","consorting":"consort","conspicuous":"conspicu","conspicuously":"conspicu","conspiracy":"conspiraci","conspirator":"conspir","conspirators":"conspir","conspire":"conspir","conspired":"conspir","conspiring":"conspir","constable":"constabl","constables":"constabl","constance":"constanc","constancy":"constanc","constant":"constant","knack":"knack","knackeries":"knackeri","knacks":"knack","knag":"knag","knave":"knave","knaves":"knave","knavish":"knavish","kneaded":"knead","kneading":"knead","knee":"knee","kneel":"kneel","kneeled":"kneel","kneeling":"kneel","kneels":"kneel","knees":"knee","knell":"knell","knelt":"knelt","knew":"knew","knick":"knick","knif":"knif","knife":"knife","knight":"knight","knights":"knight","knit":"knit","knits":"knit","knitted":"knit","knitting":"knit","knives":"knive","knob":"knob","knobs":"knob","knock":"knock","knocked":"knock","knocker":"knocker","knockers":"knocker","knocking":"knock","knocks":"knock","knopp":"knopp","knot":"knot","knots":"knot"}
+var stemmingFixture = {"consign":"consign","consigned":"consign","consigning":"consign","consignment":"consign","consist":"consist","consisted":"consist","consistency":"consist","consistent":"consist","consistently":"consist","consisting":"consist","consists":"consist","consolation":"consol","consolations":"consol","consolatory":"consolatori","console":"consol","consoled":"consol","consoles":"consol","consolidate":"consolid","consolidated":"consolid","consolidating":"consolid","consoling":"consol","consols":"consol","consonant":"conson","consort":"consort","consorted":"consort","consorting":"consort","conspicuous":"conspicu","conspicuously":"conspicu","conspiracy":"conspiraci","conspirator":"conspir","conspirators":"conspir","conspire":"conspir","conspired":"conspir","conspiring":"conspir","constable":"constabl","constables":"constabl","constance":"constanc","constancy":"constanc","constant":"constant","knack":"knack","knackeries":"knackeri","knacks":"knack","knag":"knag","knave":"knave","knaves":"knave","knavish":"knavish","kneaded":"knead","kneading":"knead","knee":"knee","kneel":"kneel","kneeled":"kneel","kneeling":"kneel","kneels":"kneel","knees":"knee","knell":"knell","knelt":"knelt","knew":"knew","knick":"knick","knif":"knif","knife":"knife","knight":"knight","knights":"knight","knit":"knit","knits":"knit","knitted":"knit","knitting":"knit","knives":"knive","knob":"knob","knobs":"knob","knock":"knock","knocked":"knock","knocker":"knocker","knockers":"knocker","knocking":"knock","knocks":"knock","knopp":"knopp","knot":"knot","knots":"knot","lay":"lay","try":"tri"}