[Python-Dev] PEP 7 updated (original) (raw)

Trent Nelson trent at snakebite.org
Thu May 13 05:47:59 CEST 2010

Does anyone know of a way to teach vim that C sources in a python checkout should have 4-space indents without changing the defaults for other C files?

I use this in my vimrc:

"----------------------------------------------------------------------------" " indentation: use detectindent plugin if possible "----------------------------------------------------------------------------" set autoindent set smartindent try let g:detectindent_preferred_expandtab = 1 let g:detectindent_preferred_tabsize = 8 let g:detectindent_preferred_indent = 4

 source $VIMRUNTIME/plugin/detectindent.vim
 au BufNewFile,BufRead * .* DetectIndent

catch set smarttab set expandtab set tabstop=8 set shiftwidth=4 set softtabstop=4 set textwidth=80 endtry

*** And this is plugin/detectindent.vim:

" Name: detectindent (global plugin) " Version: 1.0 " Author: Ciaran McCreesh " Updates: http://dev.gentoo.org/~ciaranm/vim/ " Purpose: Detect file indent settings " " License: You may redistribute this plugin under the same terms as Vim " itself. " " Usage: :DetectIndent " " " to prefer expandtab to noexpandtab when detection is " " impossible: " :let g:detectindent_preferred_expandtab = 1 " " " to set a preferred indent level when detection is " " impossible: " :let g:detectindent_preferred_indent = 4 " " Requirements: Untested on Vim versions below 6.2

fun! IsCommentStart(line) " &comments isn't reliable if &ft == "c" || &ft == "cpp" return -1 != match(a:line, '/*') else return 0 endif endfun

fun! IsCommentEnd(line) if &ft == "c" || &ft == "cpp" return -1 != match(a:line, '*/') else return 0 endif endfun

fun! DetectIndent() let l:has_leading_tabs = 0 let l:has_leading_spaces = 0 let l:shortest_leading_spaces_run = 0 let l:longest_leading_spaces_run = 0

 let l:idx_end = line("$")
 let l:idx = 1
 while l:idx <= l:idx_end
     let l:line = getline(l:idx)

     " try to skip over comment blocks, they can give really screwy

indent " settings in c/c++ files especially if IsCommentStart(l:line) while l:idx <= l:idx_end && ! IsCommentEnd(l:line) let l:line = getline(l:idx) let l:idx = l:idx + 1 endwhile let l:idx = l:idx + 1 continue endif

     let l:leading_char = strpart(l:line, 0, 1)

     if l:leading_char == "\t"
         let l:has_leading_tabs = 1

     elseif l:leading_char == " "
         " only interested if we don't have a run of spaces followed

by a " tab. if -1 == match(l:line, '^ +\t') let l:has_leading_spaces = 1 let l:spaces = strlen(matchstr(l:line, '^ +')) if l:shortest_leading_spaces_run == 0 || \ l:spaces < l:shortest_leading_spaces_run let l:shortest_leading_spaces_run = l:spaces endif if l:spaces > l:longest_leading_spaces_run let l:longest_leading_spaces_run = l:spaces endif endif

     endif

     let l:idx = l:idx + 1
 endwhile

 if l:has_leading_tabs && ! l:has_leading_spaces
     " tabs only, no spaces
     set noexpandtab
     if exists("g:detectindent_preferred_tabsize")
         let &shiftwidth  = g:detectindent_preferred_indent
         let &tabstop     = g:detectindent_preferred_indent
     endif

 elseif l:has_leading_spaces && ! l:has_leading_tabs
     " spaces only, no tabs
     set expandtab
     let &shiftwidth  = l:shortest_leading_spaces_run

 elseif l:has_leading_spaces && l:has_leading_tabs
     " spaces and tabs
     set noexpandtab
     let &shiftwidth = l:shortest_leading_spaces_run

     " mmmm, time to guess how big tabs are
     if l:longest_leading_spaces_run < 2
         let &tabstop = 2
     elseif l:longest_leading_spaces_run < 4
         let &tabstop = 4
     else
         let &tabstop = 8
     endif

 else
     " no spaces, no tabs
     if exists("g:detectindent_preferred_tabsize")
         let &shiftwidth  = g:detectindent_preferred_indent
         let &tabstop     = g:detectindent_preferred_indent
     endif
     if exists("g:detectindent_preferred_expandtab")
         set expandtab
     endif

 endif

endfun

command! -nargs=0 DetectIndent call DetectIndent()

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