Highlight xxd, canonical hexdump, and HexViewer output - #3976
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September 7, 2026 14:27
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Add the Hex Viewer syntax, adapted from facelessuser/HexViewer at commit 21b29f1882cc31e861f8898be41c719ae334256f, with its MIT license and source notice.
Support HexViewer's colon-delimited format, xxd byte groups, and canonical hexdump/Go hex.Dump output. Addresses, bytes, and ASCII columns use distinct standard scopes. Handle 64-bit offsets, repeated-line markers, short rows, embedded ASCII pipe characters, and recovery after malformed byte rows. Register .hxv, .xxd, and .hexdump without taking Intel HEX's .hex extension.
Validation: built a fresh syntax cache and checked three regression fixtures for exact text preservation, byte/address/ASCII colors, and recovery on the next line. Generated golden output with the repository's syntax-test options and checked the diff. HexViewer has over 214,000 Package Control downloads: https://packagecontrol.io/packages/HexViewer.
Fixes #1893.