Lua script to select folding block in Geany editor

Select-folding-block.lua

--[[
    Select block corresponding to current folding level
--]]

line, col = geany.rowcol()
-- Scintilla uses 0-based line numbering internally
line = line - 1
--~print("L: " .. line .. " C: " .. col)
fstart = geany.scintilla("SCI_GETFOLDPARENT", line)
--~print("S: " .. fstart+1)
fend = geany.scintilla("SCI_GETLASTCHILD", line, -1)
--~print("E: " .. fend+1)

if fend == line then
    fend = geany.scintilla("SCI_GETLASTCHILD", fstart, -1)
    sstart = geany.rowcol(fstart + 1, 0)
    send = geany.rowcol(fend + 2, 0)
else
    sstart = geany.rowcol(line + 1, 0)
    send = geany.rowcol(fend + 2, 0)
end

geany.select(send, sstart)