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toplevel-icon: implement OSC-1, CSI 20/21/22/23 t

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* The toplevel icon is now set to the app-id, unless "overridden" by
  OSC-1 or OSC-0.
* Implemented OSC-1
* OSC-0 extended to also set the icon
* Implemented CSI 20 t - report window icon
* Implemented CSI 21 t - report window title
* Implemented CSI 22 ; 1 t - push window icon
* Implemented CS 23 ; 1 t - pop window icon
* Extended CSI 22/23 ; 0 t to also push/pop the icon
* Verify app-id set by OSC-176 is valid UTF-8
* Verify icon set by OSC-0/1 is valid UTF-8
This commit is contained in:
Daniel Eklöf 2024-09-10 18:53:38 +02:00
parent 3f8a1fc85b
commit 97ec375c67
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GPG key ID: 5BBD4992C116573F
10 changed files with 220 additions and 32 deletions
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7
misc.c
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@ -42,3 +42,10 @@ timespec_sub(const struct timespec *a, const struct timespec *b,
res->tv_nsec += one_sec_in_ns;
}
}
bool
is_valid_utf8(const char *value)
{
return value != NULL &&
mbsntoc32(NULL, value, strlen(value), 0) != (size_t)-1;
}