During 1.0, we discovered a ton of bugs in our resize with reflow implementation, and now that we need to keep both the conpty and the terminal in sync on these things, it's more important than ever to do these things right.

I'm collecting up all the straggling tasks I've found that might possibly be related.

This is a combo of "Make Reflow work correctly", and "Get rid of the spaghetti in the VtEngine related to line wrapping"

(see also #4200, the original reflow mega thread)

Issues

• Resize reflow tests #796 Resize reflow tests
• Resize with Reflow loses leading spaces on resize operation #797 Resize with Reflow loses leading spaces on resize operation
• WSL Terminal Line Endings (the "exact wrap" bug) #3088 WSL Terminal Line Endings (the "exact wrap" bug)
  • [host] If a line is exactly the width of the buffer and you increase the buffer width, it will wrap incorrectly resize reflow #802 [host] If a line is exactly the width of the buffer and you increase the buffer width, it will wrap incorrectly resize reflow
• Conpty: Additional ScrollFrame optimizations #5228 Conpty: Additional ScrollFrame optimizations
• [REGRESSION >0.11.1251] Backward-kill-word after line wrapping in powershell doesn't clear exited line properly [REGRESSION >0.11.1251] Backward-kill-word after line wrapping in powershell doesn't clear exited line properly #5839 (PR Fix an accidental regression from #5771 #5870)
• MSFT:19446208 - This code in TextBuffer::Reflow
• Some text not displayed when the screen scrolls #6566 Some text not displayed when the screen scrolls
• When Copying, Line Wrapped Text Is Inconsistently Broken Into Multiple Lines #6901 When Copying, Line Wrapped Text Is Inconsistently Broken Into Multiple Lines
  • Multi-line paste with WSL omits and splices together lines #10833 Multi-line paste with WSL omits and splices together lines
  • Extra newline when copying line with wide glyph on the edge #11739
  • UIA in conhost: incorrect word boundaries when text is selected #11809
• No line wrap at the bottom of the Terminal window when entering text in TCC #7028 No line wrap at the bottom of the Terminal window when entering text in TCC
• Un-snapping Terminal Placing Cursor in Middle of Previous Command's Output #7253 Un-snapping Terminal Placing Cursor in Middle of Previous Command's Output
  • (actually has a consistent repro)
• Rendering errors in tmux split panes #6987 Rendering errors in tmux split panes
  • This might also be "Tmux pane content gets garbled after refreshing tmux client Tmux pane content gets garbled after refreshing tmux client #4029"
• conpty exhibits pathological performance on scrolling region redraw (repaints entire screen) #7019 conpty exhibits pathological performance on scrolling region redraw (repaints entire screen)
• Vanishing cursor and prints to wrong lines #7479
• Tab exits with code 1 when Console.SetBufferSize has been modified and you maximize window #7581
• Properly implement delayed EOL wrap in Terminal::_WriteBuffer #12440, which might just be Implement stream writing mechanism on buffer (a.k.a. WriteCharsLegacy2ElectricBoogaloo) #780

Things I think will all be fixed by #8000

• Command History on wrong line #6546 Command History on wrong line
• Scrambled prompt/input area #10130
• Cursor position is lost when resizing the window if not on the bottom line #10848 Cursor position is lost when resizing the window if not on the bottom line
  • Cursor position is lost when resizing the window horizontally #10868 also looks like this

PRs

Many of these are 1.0 PRs, but they've all got important context.

• Don't reflow a line as wrapped if it broke on the last cell Don't reflow a line as wrapped if it broke on the last cell #5368