Fix issue #5 (Correct indent after end of block)

[etc/vim.git] / indent / python.vim

diff --git a/indent/python.vim b/indent/python.vim
index 82f0d7c26ab117a9b20517e6a1a74856253beaf1..c632c7bebf7eeb8d1925b51c7d03835b82c99d76 100644 (file)
--- a/indent/python.vim
+++ b/indent/python.vim
@@ -15,7 +15,7 @@ let b:did_indent = 1
 setlocal expandtab
 setlocal nolisp
 setlocal autoindent
-setlocal indentexpr=GetPythonIndent(v:lnum)
+setlocal indentexpr=GetPythonPEPIndent(v:lnum)
 setlocal indentkeys=!^F,o,O,<:>,0),0],0},=elif,=except
 
 let s:maxoff = 50
@@ -101,7 +101,7 @@ function! s:BlockStarter(lnum, block_start_re)
     return -1
 endfunction
 
-function! GetPythonIndent(lnum)
+function! GetPythonPEPIndent(lnum)
 
     " First line has indent 0
     if a:lnum == 1
@@ -160,21 +160,23 @@ function! GetPythonIndent(lnum)
         return -1
     endif
 
-    " If this line is explicitly joined, try to find an indentation that looks
-    " good.
+    " If this line is explicitly joined, find the first indentation that is a
+    " multiple of four and will distinguish itself from next logical line.
     if pline =~ '\\$'
-        let compound_statement = '^\s*\(if\|while\|for\s.*\sin\|except\)\s*'
-        let maybe_indent = matchend(getline(sslnum), compound_statement)
-        if maybe_indent != -1
-            return maybe_indent
+        let maybe_indent = indent(sslnum) + &sw
+        let control_structure = '^\s*\(if\|while\|for\s.*\sin\|except\)\s*'
+        if match(getline(sslnum), control_structure) != -1
+            " add extra indent to avoid E125
+            return maybe_indent + &sw
         else
-            return indent(sslnum) + &sw * 2
+            " control structure not found
+            return maybe_indent
         endif
     endif
 
-    " If the previous line ended with a colon, indent relative to
-    " statement start.
-    if pline =~ ':\s*$'
+    " If the previous line ended with a colon and is not a comment, indent
+    " relative to statement start.
+    if pline =~ '^[^#]*:\s*\(#.*\)\?$'
         return indent(sslnum) + &sw
     endif
 
@@ -189,6 +191,13 @@ function! GetPythonIndent(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 = thisindent - indent(plnum)
+    if dedent_size < 0 && thisindent % &sw == 0
+        return -1
+    endif
+
     " In all other cases, line up with the start of the previous statement.
     return indent(sslnum)
 endfunction