" Maintainer	: Nikolai 'pcp' Weibull <da.box@home.se>
" URL		: http://www.pcppopper.org/
" Revised on	: Tue, 28 Aug 2001 14:38:52 +0200
" Language	: readline configuration file

" Only load this indent file when no other was loaded.
if exists("b:did_indent")
    finish
endif

let b:did_indent = 1

setlocal indentexpr=GetReadlineIndent()
setlocal indentkeys=!^F,o,O,=$else,=$endif

" Only define the function once.
if exists("*GetReadlineIndent")
    finish
endif

function GetReadlineIndent()
    let lnum = prevnonblank(v:lnum - 1)

    if lnum == 0
	return 0
    endif

    let line	= getline(lnum)
    let ind	= indent(lnum)

    " increase indent if previous line started with $if or $else
    if  line =~ '^\s*$\(if\|else\)\>'
	let ind = ind + &sw
    endif

    let line	= getline(v:lnum)

    " decrease indent if this line starts with $else or $endif
    if line =~ '^\s*$\(else\|endif\)\>'
	let ind = ind - &sw
    endif

    return ind
endfunction

" vim: set sw=4 sts=4: