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Add a a=q mode for querying without storing image data

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Kovid Goyal
2017-10-06 23:43:42 +05:30
parent 9e284442e8
commit 6a65f23f98
3 changed files with 27 additions and 10 deletions
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9
graphics-protocol.asciidoc
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@@ -200,6 +200,13 @@ request. The message data will be a ASCII encoded string containing only
printable characters and spaces. The string will be `OK` if reading the pixel
data succeeded or an error message.
Sometimes, using an id is not appropriate, for example, if you do not want to
replace a previously sent image with the same id, or if you are sending a dummy
image and do not want it stored by the terminal emulator. In that case, you can
use the *query action*, set `a=q`. Then the terminal emulator will try to load
the image and respond with either OK or an error, as above, but it will not
replace an existing image with the same id, nor will it store the image.
== Display images on screen
@@ -258,7 +265,7 @@ take, and the default value they take when missing. All integers are 32-bit.
|===
|Key | Value | Default | Description
| `a` | Single character. `(t, T, p)` | `t` | The overall action this graphics command is performing.
| `a` | Single character. `(t, T, q, p)` | `t` | The overall action this graphics command is performing.
4+^.^h| Keys for image transmission