.textadept/init.lua

require 'textadept'

-- _M.file_browser = require 'file_browser'

--ui.set_theme(not CURSES and 'custom' or 'custom_term')
if not CURSES then ui.set_theme('dark-custom') end

textadept.editing.AUTOPAIR = false
textadept.editing.TYPEOVER_CHARS = false
--buffer.auto_c_auto_hide = false
--buffer.end_at_last_line = false

events.connect(events.BUFFER_NEW, function(...)
    buffer.end_at_last_line = false
    buffer.auto_c_auto_hide = false
  buffer.auto_c_drop_rest_of_word = true
    buffer.edge_colour = 0x800080
    buffer.edge_column = 80
    buffer.edge_mode = _SCINTILLA.constants.EDGE_LINE
    buffer.tab_width = 4
    buffer.use_tabs = true

    local INDIC_BRACEMATCH = textadept.editing.INDIC_BRACEMATCH
    buffer.indic_style[INDIC_BRACEMATCH] = buffer.INDIC_ROUNDBOX
    buffer.indic_fore[INDIC_BRACEMATCH] = 0x00FF00
    buffer.indic_alpha[INDIC_BRACEMATCH] = 192
    buffer.indic_under[INDIC_BRACEMATCH] = true
end)

--highlight the active pane
events.connect(events.VIEW_BEFORE_SWITCH, function()
  buffer.h_scroll_bar = false
  buffer.v_scroll_bar = false
  buffer:marker_enable_highlight(false)
end)

events.connect(events.VIEW_AFTER_SWITCH, function()
  buffer.h_scroll_bar = true
  buffer.v_scroll_bar = true
  buffer:marker_enable_highlight(true)
end)

--magic auto wrapping
--[[ keys[' '] = function()
    if buffer:get_lexer() == "container"  then
        local buffer = buffer
        if buffer.column[buffer.current_pos] < buffer.edge_column then
            return false
        end
        buffer:begin_undo_action()
        while buffer.column[buffer.current_pos] > buffer.edge_column do
            buffer:word_left()
        end
        buffer:new_line()
        buffer:line_end()
        buffer:add_text(" ")
        buffer:end_undo_action()
    else return false
    end
end ]]

--redirect error messages to message buffer
events.connect(events.ERROR, function(text)
    gui.print("Error: " .. tostring(text) .. '\n')
    return false
end, 1)


--make Alt+Left/Right reduce/increase indentation
keys['aleft'] = buffer.back_tab
keys['aright'] = buffer.tab


--prevent accidentally closing buffer when saving
local save = keys['cs']
local close = keys['cw']
local last_save_time = 0

keys['cs'] = function(...)
    last_save_time = os.time()
    return save(...)
end

keys['cw'] = function(...)
    if os.time() - last_save_time >= 1 then close() end
end


--custom key bindings
keys['f3'] = ui.find.find_next
keys['sf3'] = ui.find.find_prev
keys['cg'] = textadept.editing.goto_line
keys['f9'] = textadept.bookmarks.toggle
keys['sf9'] = {textadept.bookmarks.goto_mark}
keys[not CURSES and 'c]' or 'f3'] = {textadept.bookmarks.goto_mark, false}
keys[not CURSES and 'c[' or 'f2'] = {textadept.bookmarks.goto_mark, true}
keys['c-'] = {view.split, view}
keys['c\\'] = {view.split, view, true}
keys['c\b'] = {view.unsplit, view}