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Document breakpoints

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This commit is contained in:
Marcin Kulik
2023-04-27 11:07:38 +02:00
parent f102822e29
commit b0653ec86e
2 changed files with 27 additions and 4 deletions
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26
README.md
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@@ -296,6 +296,7 @@ Available options:
- `-i, --idle-time-limit=<sec>` - Limit replayed terminal inactivity to max `<sec>` seconds - `-i, --idle-time-limit=<sec>` - Limit replayed terminal inactivity to max `<sec>` seconds
- `-s, --speed=<factor>` - Playback speed (can be fractional) - `-s, --speed=<factor>` - Playback speed (can be fractional)
- `-l, --loop` - Play in a loop - `-l, --loop` - Play in a loop
- `-b, --breakpoints` - Automatically pause on [breakpoints](#breakpoints)
- `--stream=<stream>` - Select stream to play (see below) - `--stream=<stream>` - Select stream to play (see below)
- `--out-fmt=<format>` - Select output format (see below) - `--out-fmt=<format>` - Select output format (see below)
@@ -361,6 +362,29 @@ happen in any order.
> asciinema versions prior to 2.0 confusingly referred to install ID as "API > asciinema versions prior to 2.0 confusingly referred to install ID as "API
> token". > token".
## Breakpoints
Breakpoints are markers that you can set in a recording to pause the playback at
a specific point.
When a breakpoint is reached, the playback automatically pauses and can be
resumed by pressing space bar key. The playback continues until next breakpoint
is encountered.
To enable auto-pause-on-breakpoint behaviour when replaying with `asciinema
play` use `-b`/`--breakpoints` option. It's off by default.
Breakpoints can be added to a recording in several ways:
- during recording session, by pressing a configured hotkey, see
[add_breakpoint_key config option](#configuration-file)
- for existing recording, by inserting breakpoint events (`"b"`) in the
asciicast file, see [breakpoint event](doc/asciicast-v2.md#b---breakpoint)
Breakpoints can be useful in e.g. live demos: you can create a recording with
breakpoints, then play it back during presentation, and have it stop wherever
you want to explain terminal contents in more detail.
## Hosting the recordings on the web ## Hosting the recordings on the web
As mentioned in the `Usage > rec` section above, if the `filename` argument to As mentioned in the `Usage > rec` section above, if the `filename` argument to
@@ -419,7 +443,7 @@ quiet = true
; default: C-\ (control + backslash) ; default: C-\ (control + backslash)
pause_key = C-p pause_key = C-p
; Define hotkey for adding a breakpoint, default: None ; Define hotkey for adding a breakpoint, default: none
add_breakpoint_key = C-b add_breakpoint_key = C-b
; Define hotkey prefix key - when defined other recording hotkeys must ; Define hotkey prefix key - when defined other recording hotkeys must

5
doc/asciicast-v2.md
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@@ -167,15 +167,14 @@ non-printable Unicode codepoints encoded as `\uXXXX`.
#### "b" - breakpoint #### "b" - breakpoint
Event of type `"b"` represents a playback breakpoint. Event of type `"b"` represents a breakpoint.
When breakpoint is encountered in the event stream and "pause on breakpoint" When breakpoint is encountered in the event stream and "pause on breakpoint"
functionality of the player is enabled, the playback should pause, and wait for functionality of the player is enabled, the playback should pause, and wait for
the user to resume. the user to resume.
`event-data` can be used to annotate (comment) a breakpoint. Annotations may be `event-data` can be used to annotate (comment) a breakpoint. Annotations may be
used to show a list of "chapters" (players that load whole recording into used to e.g. show a list of "chapters".
memory only).
## Notes on compatibility ## Notes on compatibility