simon-git: putty (main): Simon Tatham

[Commits to Tartarus hosted VCS]

TL;DR:
  5b6e89cb Don't accidentally interpret DCS escapes as OSC.

Repository:     https://git.tartarus.org/simon/putty.git
On the web:     https://git.tartarus.org/?p=simon/putty.git
Branch updated: main
Committer:      Simon Tatham <anakin at pobox.com>
Date:           2026-01-30 12:43:49

commit 5b6e89cb66d9c8f74bcc741b304cc5206699d4f6
web diff https://git.tartarus.org/?p=simon/putty.git;a=commitdiff;h=5b6e89cb66d9c8f74bcc741b304cc5206699d4f6;hp=4448d1a81e934b8f697d8e7bcc66219e38924259
Author: Simon Tatham <anakin at pobox.com>
Date:   Fri Jan 30 12:30:51 2026 +0000

    Don't accidentally interpret DCS escapes as OSC.
    
    Every piece of code that sets term->termstate to SEEN_OSC also sets
    term->osc_type to identify which kind of generally OSC-shaped escape
    sequence is being processed, such as DCS or APC or OSC proper. But the
    latter setting was having no effect, because immediately on arriving
    in the SEEN_OSC case handler, we would unconditionally reset
    term->osc_type back to OSCLIKE_OSC, treating them all as OSC anyway!
    
    Reported by a user, who was finding that vim was sending the DSC
    sequence ESC P z z ESC \ on startup, and this was resetting the window
    title to "z". PuTTY's _intended_ handling of DSC sequences is to
    consume them without messing up the display, and otherwise ignore
    them. It had failed to ignore this one!
    
    Added a small test of window-title setting to test_terminal.c, mostly
    so that it can contain a regression test for that bug.

 terminal/terminal.c  |  1 -
 test/test_terminal.c | 43 +++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 43 insertions(+), 1 deletion(-)