Apply filter option to substrings in blockwise-visual mode

autoload/easy_align.vim

@@ -358,9 +358,10 @@ function! s:do_align(todo, modes, all_tokens, all_delims, fl, ll, fc, lc, nth, r
 
   " Phase 1
   for line in range(a:fl, a:ll)
-    if f == 1 && getline(line) !~ fx
+    let snip = a:lc > 0 ? getline(line)[a:fc-1 : a:lc-1] : getline(line)
+    if f == 1 && snip !~ fx
       continue
-    elseif f == -1 && getline(line) =~ fx
+    elseif f == -1 && snip =~ fx
       continue
     endif
 

test/interactive.vader

@@ -1535,6 +1535,28 @@ Expect:
   bbbbb=bbbbb=bbbbb
   aaa   = aaa   = aaa
 
+Given clojure (filter with blockwise-visual mode):
+  (let [a 1
+        bbb 2
+        ccccc (range
+                10 20)]
+    (prn [a bbb ccccc]))
+
+Do (filter with blockwise-visual mode):
+  f[
+  vi[
+  \<C-V>
+  \<Enter>
+  \<C-F>g/^\S\<Enter>
+  \<Space>
+
+Expect clojure:
+  (let [a     1
+        bbb   2
+        ccccc (range
+                10 20)]
+    (prn [a bbb ccccc]))
+
 ###########################################################
 
 Given (hard-tab indentation (#19)):