Re: [PATCH v2 0/4] a couple of read_key_without_echo() fixes

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Hi Junio

On 23/02/2022 21:34, Junio C Hamano wrote:
"Phillip Wood via GitGitGadget" <gitgitgadget@xxxxxxxxx> writes:

I have added a new patch to the beginning of the series that fixes a case
where we did not call restore_term() when leaving read_key_without_echo(). I
have also reworded the commit message to patch 2 as SIGINT is actually
ignored while the editor is running (we should probably change that code to
use wait_after_clean instead).

All patches looked good.  Thanks.

Let's mark it for 'next' and below soonish.

That sounds good. I've got a couple more patches based on top of these which hopefully fix the remaining problems (notably the macos poll() bug). I'll polish and post them next week. Once those are in I hope we'll be able to enable the builtin "add -p" by default.

Thanks

Phillip


Cover letter for V1:

Fix a couple of bugs I noticed when using the builtin "add -p" with
interactive.singlekey=true. The first patch is a general fix for the
terminal save/restore functionality which forgot to call sigchain_pop() when
it restored the terminal. The last two fix reading single keys in
non-canonical mode by making sure we wait for an initial key press and only
read one byte at a time from the underlying file descriptor.

Note that these are untested on windows beyond our CI compiling them

Phillip Wood (4):
   terminal: always reset terminal when reading without echo
   terminal: pop signal handler when terminal is restored
   terminal: set VMIN and VTIME in non-canonical mode
   add -p: disable stdin buffering when interactive.singlekey is set

  add-interactive.c |  2 ++
  compat/terminal.c | 29 +++++++++++++++++++++++------
  compat/terminal.h |  8 ++++++++
  3 files changed, 33 insertions(+), 6 deletions(-)


base-commit: b80121027d1247a0754b3cc46897fee75c050b44
Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-1146%2Fphillipwood%2Fwip%2Fadd-p-vmin-v2-v2
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-1146/phillipwood/wip/add-p-vmin-v2-v2
Pull-Request: https://github.com/gitgitgadget/git/pull/1146

Range-diff vs v1:

  -:  ----------- > 1:  45609d61afc terminal: always reset terminal when reading without echo
  1:  9a3c2cea0f9 ! 2:  0020953f1cf terminal: pop signal handler when terminal is restored
      @@ Commit message
           external caller was removed by e3f7e01b50 ("Revert "editor: save and
           reset terminal after calling EDITOR"", 2021-11-22). Any future callers
           of save_term() should benefit from having the signal handler set up
      -    for them. For example if we reinstate the code to protect against an
      -    editor failing to restore the terminal attributes we would want that
      -    code to restore the terminal attributes on SIGINT. (As an aside
      -    run_command() installs a signal handler that waits for the child
      -    before re-raising the signal so we would be guaranteed to restore the
      -    settings after the child has exited.)
      +    for them.
Signed-off-by: Phillip Wood <phillip.wood@xxxxxxxxxxxxx> 2: 02009172e08 = 3: 7ae9b236554 terminal: set VMIN and VTIME in non-canonical mode
  3:  6d8423b6e1e = 4:  39b061a471b add -p: disable stdin buffering when interactive.singlekey is set



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