Un-indent for "else" after "for" and "try/except"

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

diff --git a/indent/python.vim b/indent/python.vim
index 2c305471e766e9acceb98549845cec4c71fc31a8..4dcdf8b90df03f0abcd6c1504d9001772b47b42a 100644 (file)
--- a/indent/python.vim
+++ b/indent/python.vim
@@ -3,7 +3,6 @@
 " Maintainer:       Hynek Schlawack <hs@ox.cx>
 " Prev Maintainer:  Eric Mc Sween <em@tomcom.de> (address invalid)
 " Original Author:  David Bustos <bustos@caltech.edu> (address invalid)
-" Last Change:      2012-06-21
 " License:          Public Domain
 
 " Only load this indent file when no other was loaded.
@@ -102,7 +101,6 @@ function! s:BlockStarter(lnum, block_start_re)
 endfunction
 
 function! GetPythonPEPIndent(lnum)
-
     " First line has indent 0
     if a:lnum == 1
         return 0
@@ -129,8 +127,8 @@ function! GetPythonPEPIndent(lnum)
     let thisline = getline(a:lnum)
     let thisindent = indent(a:lnum)
 
-    " If the line starts with 'elif' or 'else', line up with 'if' or 'elif'
-    if thisline =~ '^\s*\(elif\|else\)\>'
+    " If the line starts with 'elif', line up with 'if' or 'elif'
+    if thisline =~ '^\s*elif\>'
         let bslnum = s:BlockStarter(a:lnum, '^\s*\(if\|elif\)\>')
         if bslnum > 0
             return indent(bslnum)
@@ -139,8 +137,8 @@ function! GetPythonPEPIndent(lnum)
         endif
     endif
 
-    " If the line starts with 'except' or 'finally', line up with 'try'
-    " or 'except'
+    " If the line starts with 'except', or 'finally', line up with 'try'
+    " or 'except'.
     if thisline =~ '^\s*\(except\|finally\)\>'
         let bslnum = s:BlockStarter(a:lnum, '^\s*\(try\|except\)\>')
         if bslnum > 0
@@ -150,6 +148,18 @@ function! GetPythonPEPIndent(lnum)
         endif
     endif
 
+    " If the line starts with 'else', line it up with 'try', 'except', 'for',
+    " 'if', or 'elif'.
+    if thisline =~ '^\s*else\>'
+        :echom thisline
+        let bslnum = s:BlockStarter(a:lnum, '^\s*\(try\|except\|if\|elif\|for\)\>')
+        if bslnum > 0
+            return indent(bslnum)
+        else
+            return -1
+        endif
+    endif
+
     " Examine previous line
     let plnum = a:lnum - 1
     let pline = getline(plnum)
@@ -176,6 +186,12 @@ function! GetPythonPEPIndent(lnum)
 
     " If the previous line ended with a colon and is not a comment, indent
     " relative to statement start.
+    let pline = substitute(pline, '\\\\', '', 'g')
+    if v:version > 703 || (v:version == 703 && has('patch1037'))
+        let pline = substitute(pline, '".\{-}\\\@1<!"\|''.\{-}\\\@1<!''', '', 'g')
+    else
+        let pline = substitute(pline, '".\{-}\\\@<!"\|''.\{-}\\\@<!''', '', 'g')
+    endif
     if pline =~ '^[^#]*:\s*\(#.*\)\?$'
         return indent(sslnum) + &sw
     endif
@@ -191,6 +207,13 @@ function! GetPythonPEPIndent(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