57 lines
2.7 KiB
Plaintext
57 lines
2.7 KiB
Plaintext
User preferences are an unpadded base32 string, whose contents are defined in this
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document. Because the pref string is passed through the page URL, a small size is a top
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priority.
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user-preferences := [spec-version spec-variant contents]
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spec-version := 5 bits
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spec-variant := 3 bits
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contents := version-0 | ...
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If user-preferences is not present (i.e. is zero-length), then the default preferences
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should be assumed. Default preferences will be set by the instance operator
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version-0 := variant-0-0
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variant-0-0 := default-enabled default-weight *command
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default-enabled := 1 bit
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default-weight := weight
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Variant zero works with a series of commands. The version starts off with one byte. The
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first bit defines whether pronoun sets are enabled or disabled by default. A 1 indicates
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that all pronoun sets are enabled by default. The next 7 bits are the default weight of
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any enabled pronoun set. Disabled pronoun sets have a weight of zero.
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Following these defaults are a series of commands. The resolution of this algorithm
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assumes a cursor that moves over the list of pronoun sets. The cursor starts at the first
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pronoun set. After the execution of each command, the cursor moves forward by one pronoun
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set.
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Every pronoun set is either enabled or disabled. Enabled pronoun sets have the default
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weight, unless overridden. Each command is exactly one byte
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command := set-weight | skip
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set-weight := "0b" weight
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weight := 7 bits
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The set weight command sets the weight of the pronoun set under the cursor, and implicitly
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enables it, if it wasn't already enabled. The cursor moves forward by one pronoun set
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after executing the command, so several set-weight commands can be chained together in
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order to set several pronoun sets in a row.
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skip := "1b" toggle-enabled distance
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toggle-enabled := 1 bit
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distance := 6 bits
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The skip command moves the cursor ahead by a certain number of pronoun sets, and then
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optionally enables or disables the pronoun set under the cursor. If toggle-enabled is set
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to 1, then the "enabled" state of the pronoun set is toggled. Otherwise, it is left as
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the default. If a pronoun set is moved into the enabled state, it's weight is set to the
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default pronoun set weight. To set it to a different weight, move the cursor to one
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before the target pronoun set (without toggling state) and then issue a set-weight
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command.
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Remember that the cursor moves forward after EVERY command, including the skip command.
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This means that to set a weight other than the default weight, you must move the cursor to
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one before the pronoun set you want to change, and then issue a set-weight command.
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