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.h

C or C++ header file declaring interfaces and types, included by C/C++ source

Syntax highlighted

Format facts

MIME type
text/x-chdr
Apple UTI
public.c-header
Stock Quick Look
shown as plain text
Planned approach (census)
syntax-highlight
Icon hint
generic-icon
Prevalence
universal

Renderer note (from the census)

pure Go trivial

Census note

Native QL shows plain text; syntax highlighting makes C/C++ headers instantly readable and professional.