1 files changed, 57 insertions, 0 deletions
diff --git a/runtime/indent/make.vim b/runtime/indent/make.vim
new file mode 100644
index 000000000..f376424ad
--- /dev/null
+++ b/runtime/indent/make.vim
@@ -0,0 +1,57 @@
+" Vim indent file
+" Language:	    Makefile
+" Maintainer:	    Nikolai Weibull <source@pcppopper.org>
+" URL:		    http://www.pcppopper.org/vim/indent/pcp/make/
+" Latest Revision:  2004-04-25
+" arch-tag:	    b539e147-a05c-4860-98af-1d2436db2f4b
+
+" Only load this indent file when no other was loaded.
+if exists("b:did_indent")
+  finish
+endif
+
+let b:did_indent = 1
+
+setlocal indentexpr=GetMakeIndent()
+setlocal indentkeys=!^F,o,O
+
+" Only define the function once.
+if exists("*GetMakeIndent")
+  finish
+endif
+
+function s:GetStringWidth(line, str)
+  let end = matchend(a:line, a:str)
+  let width = 0
+  let i = 0
+  while i < end
+    if a:line[i] != "\t"
+      let width = width + 1
+    else
+      let width = width + &ts - (width % &ts)
+    endif
+    let i = i + 1
+  endwhile
+  return width
+endfunction
+
+function GetMakeIndent()
+  if v:lnum == 1
+    return 0
+  endif
+
+  let ind = indent(v:lnum - 1)
+  let line = getline(v:lnum - 1)
+
+  if line == ''
+    let ind = 0
+  elseif line =~ '^[^ \t#:][^#:]*:\{1,2}\([^=:]\|$\)'
+    let ind = ind + &ts
+  elseif line =~ '^\s*\h\w*\s*=\s*.\+\\$'
+    let ind = s:GetStringWidth(line, '=\s*')
+  endif
+
+  return ind
+endfunction
+
+" vim: set sts=2 sw=2: