Description of the new feature/enhancement

When I issue a ResizePseudoConsole call, if the buffer is changing from a smaller size to a larger one, ConPTY outputs the reflowed buffer and overwrites any content currently in the terminal. If there were 50 lines of output, the buffer size was 24 lines, and I resize to 30 lines, the output will be overwritten with 24 lines. (The amount of content in the buffer at the time of the resize).

Proposed technical implementation details

Possible Solutions:

1. Add the ability to disable the automatic output of the reflowed buffer
2. Add ability to specify differing buffer and window sizes for ConPTY, such that the window size will ensure VT sequences are emitted in sync with the terminal ConPTY may be connected to and therefore output looks visually correct. While also allowing a scrollback buffer to be maintained and reflowed as needed.

   • Example Pseudocode:

     CreatePseudoConsole(windowSize, bufferSize, hInput, hOutput, dwFlags, phPC)
     

Related

• [Scenario] 2 Resize 2 Reflow #5800
• Re-draw issue on resize wezterm/wezterm#1265
• Add an option to disable reflow on window resize #14291