Cannot delete first line with dd

[ELLIOTTCABLE]

I'm getting the following error, when I have a single-line document, and I try to delete to the start of the line with dd:

Error: There is no line -1 in the document.
    at getLine (/opt/homebrew-cask/Caskroom/lighttable/0.7.2/LightTable/LightTable.app/Contents/Resources/app.nw/core/node_modules/codemirror/codemirror.js:6721:39)
    at cursorCoords (/opt/homebrew-cask/Caskroom/lighttable/0.7.2/LightTable/LightTable.app/Contents/Resources/app.nw/core/node_modules/codemirror/codemirror.js:1789:26)
    at drawSelectionCursor (/opt/homebrew-cask/Caskroom/lighttable/0.7.2/LightTable/LightTable.app/Contents/Resources/app.nw/core/node_modules/codemirror/codemirror.js:1299:15)
    at drawSelection (/opt/homebrew-cask/Caskroom/lighttable/0.7.2/LightTable/LightTable.app/Contents/Resources/app.nw/core/node_modules/codemirror/codemirror.js:1266:9)
    at endOperation_R2 (/opt/homebrew-cask/Caskroom/lighttable/0.7.2/LightTable/LightTable.app/Contents/Resources/app.nw/core/node_modules/codemirror/codemirror.js:2053:30)
    at endOperations (/opt/homebrew-cask/Caskroom/lighttable/0.7.2/LightTable/LightTable.app/Contents/Resources/app.nw/core/node_modules/codemirror/codemirror.js:2014:7)
    at endOperation (/opt/homebrew-cask/Caskroom/lighttable/0.7.2/LightTable/LightTable.app/Contents/Resources/app.nw/core/node_modules/codemirror/codemirror.js:2001:7)
    at eval (/opt/homebrew-cask/Caskroom/lighttable/0.7.2/LightTable/LightTable.app/Contents/Resources/app.nw/core/node_modules/codemirror/codemirror.js:2147:17)
    at CodeMirror.setOption (/opt/homebrew-cask/Caskroom/lighttable/0.7.2/LightTable/LightTable.app/Contents/Resources/app.nw/core/node_modules/codemirror/codemirror.js:4020:48)
    at lt.objs.editor.set_mode (file:///opt/homebrew-cask/Caskroom/lighttable/0.7.2/LightTable/LightTable.app/Contents/Resources/app.nw/core/node_modules/lighttable/bootstrap.js:23804:43)

Obviously I could just cc, but. :P

[cldwalker]

This has been fixed upstream in 4.7.0. Once we can upgrade in #45, this should be fixed