Skip to content

Various insert keyboard shortcut improvements #11

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
SammyForReal merged 5 commits into from
Mar 2, 2026
+112 −40
Merged

Various insert keyboard shortcut improvements #11

Changes from all commits
Commits
Show all changes
5 commits
Select commit Hold shift + click to select a range
1aa184a
Add support for CTRL+Backspace & CTRL+Delete
michielp1807 Feb 24, 2026
41d6745
Make CTRL+Left/Right consistent with CTRL+Backspace/Delete
michielp1807 Feb 28, 2026
5b0483e
Add support for Alt+Up/Down to move current line
michielp1807 Feb 28, 2026
99d0d6c
Add support for home/end keys
michielp1807 Feb 28, 2026
fe8838b
Add support for Page Up/Down
michielp1807 Feb 28, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
152 changes: 112 additions & 40 deletions cosu.lua
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,10 @@ cosuConf.tKeyboard = {
["delete"] = keys.delete,
["backspace"] = keys.backspace,
["enter"] = keys.enter,
["home"] = keys.home,
["end"] = keys["end"],
["pageUp"] = keys.pageUp,
["pageDown"] = keys.pageDown,

["F_Help"] = keys.f1,
["F_SpChar"] = keys.f7,
Expand Down Expand Up @@ -1802,27 +1806,36 @@ end


--[[ +++ Input functions +++ ]]
function input.insert.cursorVertical(sWay, bJump)
function input.insert.cursorVertical(sWay, bJump, bMoveLine)
bMoveLine = bMoveLine and not bJump
if sWay == "up" then
if tCursor.y > 1 then
if #tContent[tCursor.y-1] >= tCursor.lastX then
tCursor.x = tCursor.lastX
if bMoveLine then
tContent[tCursor.y], tContent[tCursor.y - 1] = tContent[tCursor.y - 1], tContent[tCursor.y]
else
tCursor.x = #tContent[tCursor.y-1]+1
if tCursor.x < 1 then tCursor.x = 1 end
if #tContent[tCursor.y-1] >= tCursor.lastX then
tCursor.x = tCursor.lastX
else
tCursor.x = #tContent[tCursor.y-1]+1
if tCursor.x < 1 then tCursor.x = 1 end
end
end
if tCursor.y-tScroll.y+1 < 3 or bJump then
if tCursor.y-tScroll.y+1 < 3 or bJump then
tScroll.y = tScroll.y - 1
end
tCursor.y = tCursor.y - 1
end
elseif sWay == "down" then
if tCursor.y+1 <= #tContent then
if #tContent[tCursor.y+1] >= tCursor.lastX then
tCursor.x = tCursor.lastX
if tCursor.y + 1 <= #tContent then
if bMoveLine then
tContent[tCursor.y], tContent[tCursor.y + 1] = tContent[tCursor.y + 1], tContent[tCursor.y]
else
tCursor.x = #tContent[tCursor.y+1]+1
if tCursor.x < 1 then tCursor.x = 1 end
if #tContent[tCursor.y+1] >= tCursor.lastX then
tCursor.x = tCursor.lastX
else
tCursor.x = #tContent[tCursor.y+1]+1
if tCursor.x < 1 then tCursor.x = 1 end
end
end
if tCursor.y-tScroll.y+1 > h-2 or bJump then
tScroll.y = tScroll.y + 1
Expand All @@ -1832,16 +1845,29 @@ function input.insert.cursorVertical(sWay, bJump)
end
end

local function computeJump(sLine, sWay)
if sWay == "left" then
local remainder = sLine:sub(1, tCursor.x - 1)
local word = remainder:match("[%w_]+%s?$")
local spaces = remainder:match("%s+$")
return (word and #word) or (spaces and #spaces) or 1
else
local remainder = sLine:sub(tCursor.x)
local word = remainder:match("^%s?[%w_]+")
local spaces = remainder:match("^%s+")
return (word and #word) or (spaces and #spaces) or 1
end
end

function input.insert.cursorHorizontal(sWay, bJump)
if sWay == "left" then
if tCursor.x > 1 then
repeat
tCursor.x = tCursor.x - 1
tCursor.lastX = tCursor.x
if tCursor.x-tScroll.x+1 < 1 then
tScroll.x = tScroll.x - 1
end
until not bJump or tCursor.x <= 1 or tContent[tCursor.y]:sub(tCursor.x-1,tCursor.x-1):match('[ %(%)%.]')
local offset = bJump and computeJump(tContent[tCursor.y], sWay) or 1
tCursor.x = tCursor.x - offset
tCursor.lastX = tCursor.x
if tCursor.x <= tScroll.x then
tScroll.x = tCursor.x - 1
end
elseif tCursor.x == 1 and tCursor.y ~= 1 then
tCursor.y = tCursor.y - 1
tCursor.x = #tContent[tCursor.y] + 1
Expand All @@ -1853,13 +1879,12 @@ function input.insert.cursorHorizontal(sWay, bJump)
end
elseif sWay == "right" then
if tCursor.x <= #tContent[tCursor.y] then
repeat
tCursor.x = tCursor.x + 1
tCursor.lastX = tCursor.x
if tCursor.x-tScroll.x+1 >= w then
tScroll.x = tScroll.x + 1
end
until not bJump or tCursor.x >= #tContent[tCursor.y] or tContent[tCursor.y]:sub(tCursor.x-1,tCursor.x-1):match('[ %(%)%.]')
local offset = bJump and computeJump(tContent[tCursor.y], sWay) or 1
tCursor.x = tCursor.x + offset
tCursor.lastX = tCursor.x
if tCursor.x > tScroll.x + w then
tScroll.x = tCursor.x - w
end
elseif tCursor.y < #tContent then
tCursor.x = 1
tCursor.lastX = tCursor.x
Expand All @@ -1871,6 +1896,45 @@ function input.insert.cursorHorizontal(sWay, bJump)
end
end

function input.insert.cursorHome(bJump)
if bJump then
tCursor.y = 1
tScroll.y = 0
end
local spaces = bJump and 1 or #tContent[tCursor.y]:sub(1, tCursor.x - 1):match("^%s*") + 1
tCursor.x = tCursor.x > spaces and spaces or 1
tCursor.lastX = tCursor.x
if tCursor.x <= tScroll.x then
tScroll.x = tCursor.x - 1
end
end

function input.insert.cursorEnd(bJump)
if bJump then
tCursor.y = #tContent
tScroll.y = #tContent - h + 2
end
tCursor.x = #tContent[tCursor.y] + 1
tCursor.lastX = tCursor.x
if tCursor.x > tScroll.x + w then
tScroll.x = tCursor.x - w
end
end

function input.insert.cursorPageUp(bJump)
local newY = math.max(tCursor.y - h + 4, 2)
tScroll.y = bJump and tScroll.y + newY - tCursor.y or newY - 1
tCursor.y = newY
input.insert.cursorVertical("up", bJump)
end

function input.insert.cursorPageDown(bJump)
local newY = math.min(tCursor.y + h - 4, #tContent - 1)
tScroll.y = bJump and tScroll.y + newY - tCursor.y or newY - h + 2
tCursor.y = newY
input.insert.cursorVertical("down", bJump)
end

function input.insert.char(sChar,bCloseBrackets)
if type(sChar)~="string" then
return
Expand Down Expand Up @@ -1908,31 +1972,31 @@ function input.insert.char(sChar,bCloseBrackets)
bSaved = false
end

function input.insert.cursorDelete()
function input.insert.cursorDelete(bJump)
if #tContent > tCursor.y and tCursor.x > #tContent[tCursor.y] then
tContent[tCursor.y] = tContent[tCursor.y] .. tContent[tCursor.y+1]
table.remove(tContent,tCursor.y+1)
else
local sLine = tContent[tCursor.y]
if type(sLine) == "nil" then sLine = "" end
tContent[tCursor.y] = string.sub(sLine, 1, tCursor.x-1) .. string.sub(sLine, tCursor.x+1)
if type(sLine) == "nil" then sLine = "" end
local removes = bJump and computeJump(tContent[tCursor.y], "right") or 1
tContent[tCursor.y] = sLine:sub(1, tCursor.x - 1) .. sLine:sub(tCursor.x + removes)
end
bSaved = false
end

function input.insert.cursorBackspace()
function input.insert.cursorBackspace(bJump)
if not (tCursor.y == 1 and tCursor.x == 1) then
local lastY = tCursor.y
local sLine = tContent[tCursor.y]
if sLine:sub(tCursor.x-cosuConf.nTabSpace, tCursor.x-1) == (' '):rep(cosuConf.nTabSpace) then
tContent[tCursor.y] = string.sub(sLine, 1, tCursor.x-cosuConf.nTabSpace-1) .. string.sub(sLine, tCursor.x)
for i=1,cosuConf.nTabSpace-1 do
input.insert.cursorHorizontal("left")
end
if not bJump and sLine:sub(tCursor.x-cosuConf.nTabSpace, tCursor.x-1) == (' '):rep(cosuConf.nTabSpace) then
tContent[tCursor.y] = sLine:sub(1, tCursor.x - cosuConf.nTabSpace - 1) .. sLine:sub(tCursor.x)
for i=1, cosuConf.nTabSpace do input.insert.cursorHorizontal("left") end
elseif tCursor.x > 1 then
tContent[tCursor.y] = string.sub(sLine, 1, tCursor.x - 2) .. string.sub(sLine, tCursor.x)
local removes = bJump and computeJump(tContent[tCursor.y], "left") or 1
tContent[tCursor.y] = sLine:sub(1, tCursor.x - 1 - removes) .. sLine:sub(tCursor.x)
for i=1, removes do input.insert.cursorHorizontal("left") end
end
input.insert.cursorHorizontal("left")
if lastY ~= tCursor.y then
if tCursor.y > #tContent-3 then tScroll.y = tScroll.y end
tContent[tCursor.y] = tContent[tCursor.y] .. tContent[tCursor.y+1]
Expand Down Expand Up @@ -2368,9 +2432,9 @@ function input.handle.insert(event)
end

if event[2] == cosuConf.tKeyboard.up and type(input[mode].cursorVertical) == "function" then
input[mode].cursorVertical("up", tActiveKeys["CTRL"])
input[mode].cursorVertical("up", tActiveKeys["CTRL"], tActiveKeys[keys.leftAlt])
elseif event[2] == cosuConf.tKeyboard.down and type(input[mode].cursorVertical) == "function" then
input[mode].cursorVertical("down", tActiveKeys["CTRL"])
input[mode].cursorVertical("down", tActiveKeys["CTRL"], tActiveKeys[keys.leftAlt])
elseif event[2] == cosuConf.tKeyboard.left and type(input[mode].cursorHorizontal) == "function" then
input[mode].cursorHorizontal("left", tActiveKeys["CTRL"])
elseif event[2] == cosuConf.tKeyboard.right and type(input[mode].cursorHorizontal) == "function" then
Expand All @@ -2385,11 +2449,19 @@ function input.handle.insert(event)
tCursor.autoListY = 0
end
elseif event[2] == cosuConf.tKeyboard.delete and type(input[mode].cursorDelete) == "function" then
input[mode].cursorDelete()
input[mode].cursorDelete(tActiveKeys["CTRL"])
elseif event[2] == cosuConf.tKeyboard.backspace and type(input[mode].cursorBackspace) == "function" then
input[mode].cursorBackspace()
input[mode].cursorBackspace(tActiveKeys["CTRL"])
elseif event[2] == cosuConf.tKeyboard.enter and type(input[mode].cursorEnter) == "function" then
input[mode].cursorEnter()
elseif event[2] == cosuConf.tKeyboard.home and type(input[mode].cursorHome) == "function" then
input[mode].cursorHome(tActiveKeys["CTRL"])
elseif event[2] == cosuConf.tKeyboard["end"] and type(input[mode].cursorEnd) == "function" then
input[mode].cursorEnd(tActiveKeys["CTRL"])
elseif event[2] == cosuConf.tKeyboard.pageUp and type(input[mode].cursorPageUp) == "function" then
input[mode].cursorPageUp(tActiveKeys["CTRL"])
elseif event[2] == cosuConf.tKeyboard.pageDown and type(input[mode].cursorPageDown) == "function" then
input[mode].cursorPageDown(tActiveKeys["CTRL"])

elseif event[2] == cosuConf.tKeyboard.F_Help and mode ~= "menu" then
help("create")
Expand Down