Document the unit of "start" and "length" for mentions and text styles (#1505)

The unit of UTF-16 code units is not necessarily obvious for users of
languages that index strings by Unicode code points. Provide a pointer
to an FAQ entry as well:

https://github.com/AsamK/signal-cli/wiki/FAQ#string-indexing-units

Closes #1504

Signed-off-by: Stephen Brennan <stephen@brennan.io>
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Stephen Brennan 2024-04-13 11:26:15 -07:00 committed by GitHub
parent 419beee29a
commit e5ebb732cb
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2 changed files with 6 additions and 3 deletions

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@ -312,10 +312,11 @@ e.g.: `--sticker 00abac3bc18d7f599bff2325dc306d43:2`
*--mention*::
Mention another group member (syntax: start:length:recipientNumber) In the apps the mention replaces part of the message text, which is specified by the start and length values.
The units of start and length should be UTF-16 code units, NOT Unicode code points. For more information, see https://github.com/AsamK/signal-cli/wiki/FAQ#string-indexing-units
e.g.: `-m "Hi X!" --mention "3:1:+123456789"`
*--text-style*::
Style parts of the message text (syntax: start:length:STYLE).
Style parts of the message text (syntax: start:length:STYLE). Like `--mention`, the units are UTF-16 code units.
Where STYLE is one of: BOLD, ITALIC, SPOILER, STRIKETHROUGH, MONOSPACE
e.g.: `-m "Something BIG!" --text-style "10:3:BOLD"` or for a mixed text style `-m "Something BIG!" --text-style "0:9:ITALIC" "10:3:BOLD"`

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@ -71,10 +71,12 @@ public class SendCommand implements JsonRpcLocalCommand {
.action(Arguments.storeTrue());
subparser.addArgument("--mention")
.nargs("*")
.help("Mention another group member (syntax: start:length:recipientNumber)");
.help("Mention another group member (syntax: start:length:recipientNumber). "
+ "Unit of start and length is UTF-16 code units, NOT Unicode code points.");
subparser.addArgument("--text-style")
.nargs("*")
.help("Style parts of the message text (syntax: start:length:STYLE)");
.help("Style parts of the message text (syntax: start:length:STYLE). "
+ "Unit of start and length is UTF-16 code units, NOT Unicode code points.");
subparser.addArgument("--quote-timestamp")
.type(long.class)
.help("Specify the timestamp of a previous message with the recipient or group to add a quote to the new message.");