tag remove

(#<widget> 'tag 'remove tagName index1 ?index2 index1 index2 ...?)
Remove the tag tagName from all of the characters starting at index1 and ending just before index2 (the character at index2 isn't affected). A single command may contain any number of index1-index2 pairs. If the last index2 is omitted then the single character at index1 is tagged. If there are no characters in the specified range (e.g. index1 is past the end of the file or index2 is less than or equal to index1) then the command has no effect. This command returns an empty string.

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