Fix #667 - Do not add extra blank lines for add_blank_lines_for_python_control_statements

1 files changed, 4 insertions, 1 deletions

diff --git a/autoload/ale/fixers/generic_python.vim b/autoload/ale/fixers/generic_python.vim
index 1a4e1e93..8bdde505 100644
--- a/autoload/ale/fixers/generic_python.vim
+++ b/autoload/ale/fixers/generic_python.vim
@@ -5,17 +5,20 @@
 function! ale#fixers#generic_python#AddLinesBeforeControlStatements(buffer, lines) abort
     let l:new_lines = []
     let l:last_indent_size = 0
+    let l:last_line_is_blank = 0
 
     for l:line in a:lines
         let l:indent_size = len(matchstr(l:line, '^ *'))
 
-        if l:indent_size <= l:last_indent_size
+        if !l:last_line_is_blank
+        \&& l:indent_size <= l:last_indent_size
         \&& match(l:line, '\v^ *(return|if|for|while|break|continue)') >= 0
             call add(l:new_lines, '')
         endif
 
         call add(l:new_lines, l:line)
         let l:last_indent_size = l:indent_size
+        let l:last_line_is_blank = empty(split(l:line))
     endfor
 
     return l:new_lines