[Feature Request] Ripple editing, anchor editing

[skysphr]

Hello, these would really come in handy for subtitle sync:

• Ripple editing, where moving one line moves all lines until the end of the subtitle.
• Anchor editing, where one can set a number of anchors and stretch subtitle times by moving these anchors (SubtitleComposer implements this to some degree)

[skysphr]

Workaround for ripple editing: add this script to the automation directory (on Linux that would be ~/.aegisub/automation/autoload - create the subdirectories if they do not already exist). It should have the extension .moon as it is Moonscript.

tr = aegisub.gettext

export script_name = tr"Select to end"
export script_description = tr"Select until end"
export script_author = "skysphr"
export script_version = "1"

select_to_end = (subs, selection, active) ->
    to_end = {}

    for i, line in ipairs subs
        if i >= active
            table.insert to_end, i

    to_end

aegisub.register_macro script_name, script_description, select_to_end

Then, assign a key binding to the script and use it instead of manually selecting all subtitles to the end, which is no fun.