Adjust the fzy matched indices for tags provider

Also fix a dummy error in fzy_impl.py

autoload/clap/impl.vim

@@ -100,16 +100,22 @@ function! s:add_highlight_for_fuzzy_matched() abort
   " TODO: also add highlights for the cached lines?
   let hl_lines = g:__clap_fuzzy_matched_indices[:g:clap.display.line_count()-1]
 
+  if g:clap.provider.id ==# 'tags' && get(g:, 'vista#renderer#enable_icon', 0)
+    let offset = 2
+  else
+    let offset = 0
+  endif
+
   let lnum = 0
 
   for indices in hl_lines
     let group_idx = 1
     for idx in indices
       if group_idx < g:__clap_fuzzy_matches_hl_group_cnt + 1
-        call clap#util#add_highlight_at(lnum, idx, 'ClapFuzzyMatches'.group_idx)
+        call clap#util#add_highlight_at(lnum, idx+offset, 'ClapFuzzyMatches'.group_idx)
         let group_idx += 1
       else
-        call clap#util#add_highlight_at(lnum, idx, 'ClapMatches')
+        call clap#util#add_highlight_at(lnum, idx+offset, 'ClapMatches')
       endif
     endfor
     let lnum += 1

pythonx/clap/fzy_impl.py

@@ -59,7 +59,7 @@ def subsequence(niddle, haystack):
     """
     niddle, haystack = niddle.lower(), haystack.lower()
     if not niddle:
-        True
+        return True
     offset = 0
     for char in niddle:
         offset = haystack.find(char, offset) + 1
@@ -128,9 +128,9 @@ def positions(niddle, haystack):
     while i >= 0:
         while j >= 0:
             if (match_required or D[i][j] == M[i][j]) and D[i][j] != SCORE_MIN:
-                match_required = (i > 0 and j > 0
-                                  and M[i][j] == D[i - 1][j - 1] +
-                                  SCORE_MATCH_CONSECUTIVE)
+                match_required = (
+                    i > 0 and j > 0
+                    and M[i][j] == D[i - 1][j - 1] + SCORE_MATCH_CONSECUTIVE)
                 positions[i] = j
                 j -= 1
                 break
@@ -179,9 +179,9 @@ def score(niddle, haystack):
     while i >= 0:
         while j >= 0:
             if (match_required or D[i][j] == M[i][j]) and D[i][j] != SCORE_MIN:
-                match_required = (i > 0 and j > 0
-                                  and M[i][j] == D[i - 1][j - 1] +
-                                  SCORE_MATCH_CONSECUTIVE)
+                match_required = (
+                    i > 0 and j > 0
+                    and M[i][j] == D[i - 1][j - 1] + SCORE_MATCH_CONSECUTIVE)
                 positions[i] = j
                 j -= 1
                 break