Return to ground when we flush the last char #2823
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The InputStateMachineEngine was incorrectly not returning to the ground state after flushing the last sequence. That means that something like alt+backspace would leave us in the Escape state, not the ground state. This makes sure we return to ground. Fixes #2746. Additionally removes the "Parser.UnitTests-common.vcxproj" file, which was originally used for a theoretical time when we only open-sourced the parser. It's unnecessary now, and we can get rid of it. Also includes a small patch to bcz.cmd, to make sure bx works with projects with a space in their name.
zadjii-msft
added
Issue-Bug
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@DHowett-MSFT None of the |
Co-Authored-By: Dustin L. Howett (MSFT) <duhowett@microsoft.com>
Sure thing. One of the "weird things" in VT input is the case of something like alt+[. In VT, that's encoded as Fortunately, for VT input, each keystroke comes in as an individual write operation. So, if at the end of processing a string for the InputEngine, we find that we're not in the Ground state, that implies that we've processed some input, but not dispatched it yet. This block at the end of |
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How will this impact partial writing of VT sequences ( |
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@DHowett-MSFT Fortunately, that still works for the OutputStateMachineEngine. Each engine implements |
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Hmm. hmm. I was thinking that this might be fine since it's on Input (my bad: i forgot this wasn't output), but consider the case where SSH is buffering and the user holds down right arrow a whole bunch. Maybe it gets a sequence split across a packet? |
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That's something that was weighed in this decision originally. Unfortunately there's no way to make both scenarios work, and the ssh scenario is frankly less common. There's just no other way to differentiate between part of an arrow key press and alt+[. |
Can you leave some portion of this clarification in the code right there as a comment? It's way clearer when you explain the Alt+[ causing it to sit in the wrong state than it is by simple inspection. |
IT IS BEAUTIFUL. Thanks. |
The InputStateMachineEngine was incorrectly not returning to the ground state after flushing the last sequence. That means that something like alt+backspace would leave us in the Escape state, not the ground state. This makes sure we return to ground. Additionally removes the "Parser.UnitTests-common.vcxproj" file, which was originally used for a theoretical time when we only open-sourced the parser. It's unnecessary now, and we can get rid of it. Also includes a small patch to bcz.cmd, to make sure bx works with projects with a space in their name. (cherry picked from commit 53c81a0)
- Fix snapping to the cursor in "Terminal Scrolling" mode (GH-2705) fixes GH-1222 PSReadline calls SetConsoleCursorPosition on each character. We try to snap. However, we'd only ever do this with the visible viewport, the viewport defined by `SCREEN_INFORMATION::_viewport`. When there's a virtual viewport in Terminal Scrolling mode, we actually need to snap the virtual viewport, so that this behavior looks more regular. (cherry picked from commit 6f4b98a) - Passthrough BEL in conpty (GH-2990) fixes GH-2952. (cherry picked from commit 6831120) - make filling chars (and, thus, erase line/char) unset wrap (GH-2831) EraseInLine calls `FillConsoleOutputCharacterW()`. In filling the row with chars, we were setting the wrap flag. We need to specifically not do this on ANY _FILL_ operation. Now a fill operation UNSETS the wrap flag if we fill to the end of the line. Originally, we had a boolean `setWrap` that would mean... - **true**: if writing to the end of the row, SET the wrap value to true - **false**: if writing to the end of the row, DON'T CHANGE the wrap value ,- current wrap value | ,- fill last cell? | | ,- new wrap value | | | ,- comments |-|-|-| |1|0|0| THIS CASE WAS UNHANDLED To handle that special case (1-0-0), we need to UNSET the wrap. So now, we have ~setWrap~ `wrap` mean the following: - **true**: if writing to the end of the row, SET the wrap value to TRUE - **false**: if writing to the end of the row, SET the wrap value to FALSE - **nullopt**: leave the wrap value as it is Closes GH-1126 (cherry picked from commit 4dd9f9c) - When reverse indexing, preserve RGB/256 attributes (GH-2987) (cherry picked from commit 847d6b5) - do not allow CUU and CUD to move "across" margins. (GH-2996) If we're moving the cursor up, its vertical movement should be stopped at the top margin. Similarly, this applies to moving down and the bottom margin. Fixes GH-2929. (cherry picked from commit 0ce08af) - Prevent the v1 propsheet from zeroing colors, causing black text on black background. (GH-2651) fixes GH-2319 (cherry picked from commit b97db63) - Render the cursor state to VT (GH-2829) (cherry picked from commit a9f3849) - Don't put NUL in the buffer in VT mode (GH-3015) (cherry picked from commit a82d6b8) - Return to ground when we flush the last char (GH-2823) The InputStateMachineEngine was incorrectly not returning to the ground state after flushing the last sequence. That means that something like alt+backspace would leave us in the Escape state, not the ground state. This makes sure we return to ground. Additionally removes the "Parser.UnitTests-common.vcxproj" file, which was originally used for a theoretical time when we only open-sourced the parser. It's unnecessary now, and we can get rid of it. Also includes a small patch to bcz.cmd, to make sure bx works with projects with a space in their name. (cherry picked from commit 53c81a0) - Add support for passing through extended text attributes, like… (GH-2917) ... Related work items: #23678919, #23678920, #23731910, #23731911, #23731912, #23731913, #23731914, #23731915, #23731916, #23731917, #23731918
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Summary of the Pull Request
The InputStateMachineEngine was incorrectly not returning to the ground state after flushing the last sequence. That means that something like alt+backspace would leave us in the Escape state, not the ground state. This makes sure we return to ground.
Additionally removes the "Parser.UnitTests-common.vcxproj" file, which was originally used for a theoretical time when we only open-sourced the parser. It's unnecessary now, and we can get rid of it.
Also includes a small patch to bcz.cmd, to make sure bx works with projects with a space in their name.
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