enhancement: add missing common file extensions to language detection
Author: nos1dot618Created Aug 28, 2026Updated Aug 28, 2026
Some common file extensions are currently missing from the language definitions.
The following extensions could be added:
- C++ ->
.hh,.hxx,.ixx - F# ->
.fsscript - JSON ->
.jsonl,.ndjson - Markdown ->
.markdown - XML ->
.xhtml
There is also a duplicate .xml entry in the XML language definition that can be removed.
These changes would allow edit to recognize more commonly used file types without changing the existing syntax highlighting behavior.
Source: microsoft/edit