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Jim Blandy authored
(character_width, disptab_matches_widthtab, recompute_width_table, width_run_cache_on_off): New functions. (compute_motion): Call width_run_cache_on_off. If this buffer's width run cache is enabled, consult it to see if we need to traverse a region character-by-character; store information in the cache after doing so. Call find_before_next_newline instead of writing out an equivalent loop explicitly, to take advantage of the newline cache. Doc fixes.
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