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Reduce size of encoded key event by using base64 encoding

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Kovid Goyal
2017-02-10 15:34:06 +05:30
parent ded9cf227a
commit d9563e52c8
4 changed files with 143 additions and 140 deletions
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17
protocol-extensions.asciidoc
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@@ -362,21 +362,18 @@ The escape sequence encodes the following properties:
* The actual key being pressed
```
<ESC>_K<type><modifiers>:<key><ESC>\
<ESC>_K<type><modifiers><key><ESC>\
```
Where `<type>` is one of `p` -- press, `r` -- release and `t` -- repeat.
Modifiers is a bitmask represented as a single hexadecimal digit in lower case.
Shift -- `0x1`, Control -- `0x2`, Alt -- `0x4` and Super -- `0x8`. `<key>` is
a number (encoded in base64) corresponding to the key pressed. The key name to
number mapping is defined in link:key_encoding.asciidoc[this table].
Modifiers is a bitmask represented as a single base64 digit. Shift -- `0x1`,
Control -- `0x2`, Alt -- `0x4` and Super -- `0x8`. `<key>` is a number
(encoded in base64) corresponding to the key pressed. The key name to number
mapping is defined in link:key_encoding.asciidoc[this table].
For example:
```
<ESC>_Kp6:CQ<ESC>\ is <Ctrl>+<Alt>+x (press)
<ESC>_Krf:HO<ESC>\ is <Ctrl>+<Alt>+<Shift>+<Super>+PageUp (release)
<ESC>_KpGp<ESC>\ is <Ctrl>+<Alt>+x (press)
<ESC>_KrP8<ESC>\ is <Ctrl>+<Alt>+<Shift>+<Super>+PageUp (release)
```
There is a `:` between the modifiers and the key-press so that in the future
more modifiers can be added, if needed.