Added early support for terminal vim

autoload/indent_guides.vim

@@ -32,11 +32,8 @@ endfunction
 "
 function! indent_guides#enable()
   let g:indent_guides_autocmds_enabled = 1
-  call indent_guides#clear_matches()
-
-  if g:indent_guides_auto_colors
   call indent_guides#highlight_colors()
-  endif
+  call indent_guides#clear_matches()
 
   " loop through each indent level and define a highlight pattern
   " will automagically figure out whether to use tabs or spaces
@@ -80,7 +77,45 @@ endfunction
 " Automagically calculates and defines the indent highlight colors.
 "
 function! indent_guides#highlight_colors()
+  " define default highlights
+  exe 'hi IndentGuidesOdd  guibg=lightgrey ctermbg=1'
+  exe 'hi IndentGuidesEven guibg=darkgrey  ctermbg=0'
+
   if g:indent_guides_auto_colors
+    if has('gui_running')
+      call indent_guides#gui_highlight_colors()
+    else
+      call indent_guides#cterm_highlight_colors()
+    endif
+  endif
+endfunction
+
+"
+" Automagically calculates and defines the indent highlight colors for
+" terminal vim.
+"
+function! indent_guides#cterm_highlight_colors()
+  let hi_search = indent_guides#capture_highlight('search')
+  let pattern   = "ctermbg=\\zs[0-9A-Za-z]\\+\\ze"
+  let hi_search_ctermbg = ''
+
+  " capture the backgroud color from the search highlight
+  if hi_search =~ pattern
+    let hi_search_ctermbg = matchstr(hi_search, pattern)
+  endif
+
+  if hi_search_ctermbg =~ "[0-9A-Za-z]\\+"
+    " define the new highlights
+    exe 'hi IndentGuidesOdd  ctermbg=none'
+    exe 'hi IndentGuidesEven ctermbg=' . hi_search_ctermbg
+  end
+endfunction
+
+"
+" Automagically calculates and defines the indent highlight colors for gui
+" vim.
+"
+function! indent_guides#gui_highlight_colors()
   let hi_normal       = indent_guides#capture_highlight('normal')
   let hex_pattern     = 'guibg=\zs'. g:indent_guides_hex_color_pattern . '\ze'
   let name_pattern    = "guibg='\\?\\zs[0-9A-Za-z ]\\+\\ze'\\?"
@@ -105,7 +140,6 @@ function! indent_guides#highlight_colors()
     exe 'hi IndentGuidesOdd  guibg=' . hi_odd_bg
     exe 'hi IndentGuidesEven guibg=' . hi_even_bg
   end
-  endif
 endfunction
 
 "

plugin/indent_guides.vim

@@ -1,7 +1,7 @@
 " Author:   Nate Kane <nathanaelkane AT gmail DOT com>
 " Homepage: http://github.com/nathanaelkane/vim-indent-guides
 
-if exists('g:loaded_indent_guides') || &cp || !has('gui_running')
+if exists('g:loaded_indent_guides') || &cp
   finish
 endif