Complete relative paths more like vim's completion

Relative path completion relies on the globpath() function, prepending
a leading dot and slash when creating the path for globpath(), but this
results in path completions with a leading dot and slash, unlike vim's
built in file/path completion, so strip them back out before returning.

Author: mmrwoods

plugin/grepper.vim

@@ -237,7 +237,10 @@ function! grepper#complete_files(lead, _line, _pos)
   let [head, path] = s:extract_path(a:lead)
   " handle relative paths
   if empty(path) || (path =~ '\s$') || (path =~ '^\s*\w\+')
-    return map(split(globpath('.'.s:slash, path.'*'), '\n'), 'head . "." . v:val[1:] . (isdirectory(v:val) ? s:slash : "")')
+    return map(
+          \ map(split(globpath('.'.s:slash, path.'*'), '\n'), "substitute(v:val, '^\\s*.'.s:slash, '', '')"),
+          \ 'head . v:val . (isdirectory(v:val) ? s:slash : "")'
+          \ )
   " handle sub paths
   elseif path =~ '^.\/'
     return map(split(globpath('.'.s:slash, path[2:].'*'), '\n'), 'head . "." . v:val[1:] . (isdirectory(v:val) ? s:slash : "")')

test/feature/completion.vader

@@ -38,13 +38,13 @@ Execute (command: flags, -tool options):
   AssertEqual count(grepper#complete('', 'Grepper -tool ', v:null), 'grep '), 1
 
 Execute (prompt: relative path, empty string):
-  AssertEqual grepper#complete_files('x ', v:null, v:null), ['x ./foo/']
+  AssertEqual grepper#complete_files('x ', v:null, v:null), ['x foo/']
 
 Execute (prompt: relative path, whitespace only):
-  AssertEqual grepper#complete_files('x  ', v:null, v:null), ['x  ./foo/']
+  AssertEqual grepper#complete_files('x  ', v:null, v:null), ['x  foo/']
 
 Execute (prompt: relative path, leading word chars):
-  AssertEqual grepper#complete_files('x f', v:null, v:null), ['x ./foo/']
+  AssertEqual grepper#complete_files('x f', v:null, v:null), ['x foo/']
 
 Execute (prompt: sub-path, ./ exact match):
   AssertEqual grepper#complete_files('x ./', v:null, v:null), ['x ./foo/']