// Step 3 is the removal of residual suffixes.
//
func step3(word *snowballword.SnowballWord) bool {
suffix, suffixRunes := word.FirstSuffixIfIn(word.RVstart, len(word.RS),
"os", "a", "o", "á", "í", "ó", "e", "é",
)
// No suffix found, nothing to do.
//
if suffix == "" {
return false
}
// Remove all these suffixes
word.RemoveLastNRunes(len(suffixRunes))
if suffix == "e" || suffix == "é" {
// If preceded by gu with the u in RV delete the u
//
guSuffix, _ := word.FirstSuffix("gu")
if guSuffix != "" {
word.RemoveLastNRunes(1)
}
}
return true
}