X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/fa0f4802afec544c313f4590825dd48400539440..39727f56475edb51364b4713aab5b2ce79cd34b4:/indent/python.vim

diff --git a/indent/python.vim b/indent/python.vim
index d86eabb..d146566 100644
--- a/indent/python.vim
+++ b/indent/python.vim
@@ -16,6 +16,9 @@ setlocal nolisp
 setlocal autoindent
 setlocal indentexpr=GetPythonPEPIndent(v:lnum)
 setlocal indentkeys=!^F,o,O,<:>,0),0],0},=elif,=except
+setlocal tabstop=4
+setlocal softtabstop=4
+setlocal shiftwidth=4
 
 let s:maxoff = 50
 let s:block_rules = {
@@ -29,9 +32,12 @@ let s:control_statement = '^\s*\(if\|while\|with\|for\|except\)\>'
 let s:stop_statement = '^\s*\(break\|continue\|raise\|return\|pass\)\>'
 
 " Skip strings and comments
-let s:skip = 'synIDattr(synID(line("."), col("."), 0), "name") ' .
+let s:skip_special_chars = 'synIDattr(synID(line("."), col("."), 0), "name") ' .
            \ '=~? "string\\|comment"'
 
+let s:skip_search = 'synIDattr(synID(line("."), col("."), 0), "name") ' .
+           \ '=~? "comment"'
+
 " compatibility with vim patch 7.3.629: 'sw' can be set to -1 to follow 'ts'
 if exists('*shiftwidth')
     function! s:sw()
@@ -65,12 +71,12 @@ function! s:find_opening_paren(...)
     let stopline = max([0, line('.') - s:maxoff])
 
     " Return if cursor is in a comment or string
-    exe 'if' s:skip '| return [0, 0] | endif'
+    exe 'if' s:skip_search '| return [0, 0] | endif'
 
     let positions = []
     for p in s:paren_pairs
         call add(positions, searchpairpos(
-           \ '\V'.p[0], '', '\V'.p[1], 'bnW', s:skip, stopline))
+           \ '\V'.p[0], '', '\V'.p[1], 'bnW', s:skip_special_chars, stopline))
     endfor
 
     " Remove empty matches and return the type with the closest match
@@ -179,14 +185,15 @@ function! s:indent_like_previous_line(lnum)
     let text = getline(lnum)
     let start = s:find_start_of_multiline_statement(lnum)
     let base = indent(start)
+    let current = indent(a:lnum)
 
     " Jump to last character in previous line.
     call cursor(lnum, len(text))
-    let ignore_last_char = eval(s:skip)
+    let ignore_last_char = eval(s:skip_special_chars)
 
     " Search for final colon that is not inside a string or comment.
     while search(':\s*\%(#.*\)\?$', 'bcW', lnum)
-      if eval(s:skip)
+      if eval(s:skip_special_chars)
         normal! h
       else
         return base + s:sw()
@@ -215,6 +222,13 @@ function! s:indent_like_previous_line(lnum)
         return -1
     endif
 
+    " If this line is dedented and the number of indent spaces is valid
+    " (multiple of the indentation size), trust the user
+    let dedent_size = current - base
+    if dedent_size < 0 && current % s:sw() == 0
+        return -1
+    endif
+
     " In all other cases, line up with the start of the previous statement.
     return base
 endfunction