Hi, On Fri, Apr 30, 2021 at 2:15 AM BPJ <b...@melroch.se> wrote: > > > Den fre 30 apr. 2021 07:56Tony Mechelynck <antoine.mechely...@gmail.com> > skrev: >> >> On Fri, Apr 30, 2021 at 5:10 AM Yegappan Lakshmanan <yegapp...@gmail.com> >> wrote: >> > >> > Hi Tony, >> > >> > On Thu, Apr 29, 2021 at 3:07 AM Tony Mechelynck >> > <antoine.mechely...@gmail.com> wrote: >> > > >> > > The help for :vimgrep (in quickfix.txt with "Last change: 2021 Feb >> > > 05", maybe that date is in error) now mentions an [f] flag without >> > > saying what it does. One recent vim_dev thread makes me think that >> > > with the 'f' flag "fuzzy matching" is used. So I used :helpgrep >> > > \<fuzzy\> and found several mentions of fuzzy matching, but AFAICT >> > > they all assume that the reader knows what fuzzy matching is. Nowhere >> > > did I see the expression defined. So what is fuzzy matching? >> > > >> > >> > We should add a description for "fuzzy matching" to the Vim help. >> > I will send out a PR. >> > >> > Fuzzy matching refers to matching strings using non-exact matches. >> > For example, when you search for the 'get pat' string using fuzzy >> > matching, it will match the strings 'GetPattern', 'PatternGet', >> > 'getPattern', 'patGetter', 'getSomePattern', 'MatchpatternGet' etc. >> > >> > :echo matchfuzzy(['GetPattern', 'PatternGet', 'getPattern', >> > 'patGetter', 'getSomePattern', 'MatchpatternGet'], 'get pat') >> > ['patGetter', 'GetPattern', 'PatternGet', 'getPattern', >> > 'getSomePattern', 'MatchpatternGet'] >> > >> > Fuzzy matching will match a string, if all the characters in the search >> > string are present in the string in the same order. Case is ignored during >> > the search. Other characters can be present between two characters >> > in the search string. If the search string has multiple words, then each >> > word >> > is matched separately. So the words in the search string can be present in >> > any order in a string. >> > >> > Fuzzy matching assigns a score for each match based on some criteria. >> > The match with the highest score is returned first. >> > >> > Regards, >> > Yegappan >> >> Ah I see. So IIUC Vim's fuzzy matching will match (caselessly) if >> there is an extra letter but not if there is a missing letter, and it >> won't match swapped letters: if the search string is 'word', then Vim >> will find 'WoRd' or 'worrd' but not 'wrd' or 'wrod'. Thanks for >> explaining. > > > > IOW fuzzy 'word' is equivalent to regex 'w.*o.*r.*d.*' or '.*w.*o.*r.*d.*'? >
When fuzzy matching a string, the case is ignored. So a fuzzy 'word' is sort of equivalent to '\c.*w.*o.*r.*d.*', But when multiple matches are sorted by the fuzzy match score, the match is much more than a regular expression match. For example, the score is higher for a match with less distance between the characters. Similarly matches at the beginning of a word or after a camel case or underscore are given a higher score. - Yegappan -- -- You received this message from the "vim_use" maillist. Do not top-post! Type your reply below the text you are replying to. For more information, visit http://www.vim.org/maillist.php --- You received this message because you are subscribed to the Google Groups "vim_use" group. To unsubscribe from this group and stop receiving emails from it, send an email to vim_use+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/vim_use/CAAW7x7m58RZj52LmqGxH7nXKFrf1aF2ZCUMxYpOQ%3Dwq0Ob0y%2Bg%40mail.gmail.com.
