kitty: config updates

notable options that changed or were recently added to kitty and
needed to be ingegrated:
* scrollback_fill_enlarged_window yes
* scrollback_lines 500000
  scrollback has been limited to 500k lines, which, in practice is
  still too much
* confirm_os_window_close 1
* allow_hyperlinks ask
* tab_activity_symbol have been set to 🚦, cause why not
* per-tab zoom keybinding have been added
* tab title template have been edited to also include tab index number
* new url prefixes have been added

.config/kitty/kitty.conf

@@ -185,7 +185,7 @@ cursor_stop_blinking_after 15.0
 
 #: Scrollback {{{
 
-scrollback_lines 10000000
+scrollback_lines 500000
 
 #: Number of lines of history to keep in memory for scrolling back.
 #: Memory is allocated on demand. Negative numbers are (effectively)
@@ -212,6 +212,11 @@ scrollback_lines 10000000
 #: 2500 lines per megabyte at 100 chars per line. A value of zero or
 #: less disables this feature. The maximum allowed size is 4GB.
 
+scrollback_fill_enlarged_window yes
+
+#: Fill new space with lines from the scrollback buffer after enlarging a
+#: window.
+
 # wheel_scroll_multiplier 5.0
 
 #: Modify the amount scrolled by the mouse wheel. Note this is only
@@ -255,11 +260,17 @@ open_url_modifiers kitty_mod
 #: special value default means to use the operating system's default
 #: URL handler.
 
-url_prefixes http https file ftp ssh git irc
+url_prefixes http https file ftp  gemini irc gopher mailto news git ssh
 
 #: The set of URL prefixes to look for when detecting a URL under the
 #: mouse cursor.
 
+detect_urls yes
+
+#: Detect URLs under the mouse. Detected URLs are highlighted with an underline
+#: and the mouse cursor becomes a hand over them. Even if this option is
+#: disabled, URLs are still clickable.
+
 copy_on_select no
 
 #: Copy to clipboard or a private buffer on select. With this set to
@@ -276,7 +287,7 @@ copy_on_select no
 #: programs, including websites open in your browser can read the
 #: contents of the system clipboard.
 
-strip_trailing_spaces always
+strip_trailing_spaces smart
 
 #: Remove spaces at the end of lines when copying to clipboard. A
 #: value of smart will do it when using normal selections, but not
@@ -314,6 +325,16 @@ focus_follows_mouse yes
 #: The shape of the mouse pointer when the program running in the
 #: terminal grabs the mouse. Valid values are: arrow, beam and hand
 
+default_pointer_shape beam
+
+#: The default shape of the mouse pointer. Valid values are: arrow, beam and
+#: hand
+
+pointer_shape_when_dragging beam
+
+#: The default shape of the mouse pointer when dragging across text. Valid
+#: values are: arrow, beam and hand
+
 #: }}}
 
 #: Performance tuning {{{
@@ -501,6 +522,13 @@ resize_in_steps yes
 #: when resizing the OS window. Note that this does not currently work
 #: on Wayland.
 
+confirm_os_window_close 1
+
+#: Ask for confirmation when closing an OS window or a tab that has at least
+#: this number of kitty windows in it. A value of zero disables confirmation.
+#: This confirmation also applies to requests to quit the entire application (all
+#: OS windows, via the quit action).
+
 #: }}}
 
 #: Tab bar {{{
@@ -513,6 +541,7 @@ tab_bar_margin_width 0.0
 
 #: The margin to the left and right of the tab bar (in pts)
 
+# tab_bar_style powerline
 tab_bar_style fade
 
 #: The tab bar style, can be one of: fade, separator, powerline, or
@@ -548,7 +577,17 @@ tab_separator " ∣"
 #: The separator between tabs in the tab bar when using separator as
 #: the tab_bar_style.
 
-tab_title_template "{title}"
+tab_powerline_style angled
+
+#: The powerline separator style between tabs in the tab bar when using
+#: powerline as the tab_bar_style, can be one of: angled, slanted, or round.
+
+tab_activity_symbol 🚦
+
+#: Some text or a unicode symbol to show on the tab if a window in the tab that
+#: does not have focus has some activity.
+
+tab_title_template "{index}:{title}"
 
 #: A template to render the tab title. The default just renders the
 #: title. If you wish to include the tab-index as well, use something
@@ -864,6 +903,13 @@ editor vim
 #: functionality is a security risk as it means that any program, even
 #: one running on a remote server via SSH can read your clipboard.
 
+allow_hyperlinks ask
+
+#: Process hyperlink (OSC 8) escape sequences. If disabled OSC 8 escape
+#: sequences are ignored. Otherwise they become clickable links, that you can
+#: click by holding down ctrl+shift and clicking with the mouse. The special
+#: value of ask means that kitty will ask before opening the link.
+
 # term xterm-kitty
 
 #: The value of the TERM environment variable to set. Changing this
@@ -880,6 +926,14 @@ editor vim
 
 #: OS specific tweaks {{{
 
+wayland_titlebar_color system
+
+#: Change the color of the kitty window’s titlebar on Wayland systems with
+#: client side window decorations such as GNOME. A value of system means to use
+#: the default system color, a value of background means to use the background
+#: color of the currently active window and finally you can use an arbitrary
+#: color, such as #12af59 or red.
+
 # macos_titlebar_color system
 
 #: Change the color of the kitty window's titlebar on macOS. A value
@@ -1183,6 +1237,9 @@ map kitty_mod+t     new_tab
 #: You can change the font size for all top-level kitty OS windows at
 #: a time or only the current one.
 
+map kitty_mod+alt+equal change_font_size current +2.0
+map kitty_mod+alt+minus change_font_size current -2.0
+map kitty_mod+alt+backspace change_font_size current 0
 # map kitty_mod+equal     change_font_size all +2.0
 # map kitty_mod+minus     change_font_size all -2.0
 # map kitty_mod+backspace change_font_size all 0