## Here is a short improved example for HTML.
##
syntax "HTML" "\.htm[l]?$"
color brightblue start="<" end=">"
color red "&[^;[[:space:]]]*;"
color yellow "[^ =]+=["']?[^"']+["']"
color green start="<!--" end="-->"
color white start="<!DOCTYPE" end=">"
# xhtml
color white start="<\?xml" end="\?>"

## Trailing spaces
color ,green "[[:space:]]+$"