X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/2c38ff0159249d9aff92ccde1cad9ee310a00a8d..222fbda19d59ba0124aedade5a3ee4a10fb90a93:/indent/python.vim

diff --git a/indent/python.vim b/indent/python.vim
index 7bbc415..b3a5141 100644
--- a/indent/python.vim
+++ b/indent/python.vim
@@ -1,6 +1,7 @@
 " PEP8 compatible Python indent file
 " Language:         Python
-" Maintainer:       Hynek Schlawack <hs@ox.cx>
+" Maintainer:       Daniel Hahler <https://daniel.hahler.de/>
+" Prev 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)
 " License:          CC0
@@ -9,6 +10,7 @@
 " Written in 2004 by David Bustos <bustos@caltech.edu>
 " Maintained from 2004-2005 by Eric Mc Sween <em@tomcom.de>
 " Maintained from 2013 by Hynek Schlawack <hs@ox.cx>
+" Maintained from 2017 by Daniel Hahler <https://daniel.hahler.de/>
 "
 " To the extent possible under law, the author(s) have dedicated all copyright
 " and related and neighboring rights to this software to the public domain
@@ -32,6 +34,10 @@ setlocal tabstop=4
 setlocal softtabstop=4
 setlocal shiftwidth=4
 
+if !exists('g:python_pep8_indent_multiline_string')
+    let g:python_pep8_indent_multiline_string = 0
+endif
+
 let s:maxoff = 50
 let s:block_rules = {
             \ '^\s*elif\>': ['if', 'elif'],
@@ -141,20 +147,26 @@ endfunction
 " Find possible indent(s) of the block starter that matches the current line.
 function! s:find_start_of_block(lnum, types, multiple)
     let r = []
+    let types = copy(a:types)
     let re = '\V\^\s\*\('.join(a:types, '\|').'\)\>'
     let lnum = a:lnum
     let last_indent = indent(lnum) + 1
     while lnum > 0 && last_indent > 0
         let indent = indent(lnum)
         if indent < last_indent
-            if getline(lnum) =~# re
-                if !a:multiple
-                    return [indent]
+            for type in types
+                let re = '\v^\s*'.type.'>'
+                if getline(lnum) =~# re
+                    if !a:multiple
+                        return [indent]
+                    endif
+                    if index(r, indent) == -1
+                        let r += [indent]
+                    endif
+                    " Remove any handled type, e.g. 'if'.
+                    call remove(types, index(types, type))
                 endif
-                if !len(r) || index(r, indent) == -1
-                    let r += [indent]
-                endif
-            endif
+            endfor
             let last_indent = indent(lnum)
         endif
         let lnum = prevnonblank(lnum - 1)
@@ -235,14 +247,15 @@ function! s:indent_like_block(lnum)
             if len(indents) == 1
                 return indents[0]
             endif
+
             " Multiple valid indents, e.g. for 'else' with both try and if.
             let indent = indent(a:lnum)
-            for possible_indent in indents
-                if indent == possible_indent
-                    return indent
-                endif
-            endfor
-            return -2
+            if index(indents, indent) != -1
+                " The indent is valid, keep it.
+                return indent
+            endif
+            " Fallback to the first/nearest one.
+            return indents[0]
         endfor
     endfor
     return -2
@@ -290,17 +303,19 @@ function! s:indent_like_previous_line(lnum)
         return base + s:sw()
     endif
 
+    let empty = getline(a:lnum) =~# '^\s*$'
+
     " If the previous statement was a stop-execution statement or a pass
     if getline(start) =~# s:stop_statement
         " Remove one level of indentation if the user hasn't already dedented
-        if indent(a:lnum) > base - s:sw()
+        if empty || current > base - s:sw()
             return base - s:sw()
         endif
         " Otherwise, trust the user
         return -1
     endif
 
-    if s:is_dedented_already(current, base)
+    if !empty && s:is_dedented_already(current, base)
         return -1
     endif
 
@@ -333,28 +348,67 @@ function! s:is_python_string(lnum, ...)
 endfunction
 
 function! GetPythonPEPIndent(lnum)
-
     " First line has indent 0
     if a:lnum == 1
         return 0
     endif
 
+    let line = getline(a:lnum)
+    let prevline = getline(a:lnum-1)
+
     " Multilinestrings: continous, docstring or starting.
-    if s:is_python_string(a:lnum)
+    if s:is_python_string(a:lnum-1, len(prevline))
+                \ && (s:is_python_string(a:lnum, 1)
+                \     || match(line, '^\%("""\|''''''\)') != -1)
+
+        " Indent closing quotes as the line with the opening ones.
+        let match_quotes = match(line, '^\s*\zs\%("""\|''''''\)')
+        if match_quotes != -1
+            " closing multiline string
+            let quotes = line[match_quotes:match_quotes+2]
+            let pairpos = searchpairpos(quotes, '', quotes, 'b')
+            if pairpos[0] != 0
+                return indent(pairpos[0])
+            else
+                " TODO: test to cover this!
+            endif
+        endif
+
         if s:is_python_string(a:lnum-1)
             " Previous line is (completely) a string.
-            return s:indent_like_previous_line(a:lnum)
+            return indent(a:lnum-1)
         endif
 
-        if match(getline(a:lnum-1), '^\s*\%("""\|''''''\)') != -1
+        if match(prevline, '^\s*\%("""\|''''''\)') != -1
             " docstring.
-            return s:indent_like_previous_line(a:lnum)
+            return indent(a:lnum-1)
         endif
 
-        if s:is_python_string(a:lnum-1, len(getline(a:lnum-1)))
-            " String started in previous line.
-            return 0
+        let indent_multi = get(b:, 'python_pep8_indent_multiline_string',
+                    \ get(g:, 'python_pep8_indent_multiline_string', 0))
+        if match(prevline, '\v%("""|'''''')$') != -1
+            " Opening multiline string, started in previous line.
+            if (&autoindent && indent(a:lnum) == indent(a:lnum-1))
+                        \ || match(line, '\v^\s+$') != -1
+                " <CR> with empty line or to split up 'foo("""bar' into
+                " 'foo("""' and 'bar'.
+                if indent_multi == -2
+                    return indent(a:lnum-1) + s:sw()
+                endif
+                return indent_multi
+            endif
+        endif
+
+        " Keep existing indent.
+        if match(line, '\v^\s*\S') != -1
+            return -1
         endif
+
+        if indent_multi != -2
+            return indent_multi
+        endif
+
+        return s:indent_like_opening_paren(a:lnum)
     endif
 
     " Parens: If we can find an open parenthesis/bracket/brace, line up with it.