** A title shall always have a trailing period, except upper level titles

grep --color=auto -nH --null -E '^\*\*.*[^.:]$' NEWS

** A buffer name shall be placed in double apostrophs.

grep --color=auto -nH --null -E '(^|[^"])\*[^"\*]+\*[^*]' NEWS

** Check for comma in "Previously, "

grep --color=auto -nH --null -E 'Previously ' NEWS

** Check for wrong apostrophes

grep --color=auto -nH --null -E '[`‘’‚ˮ„“]' NEWS

** Check for quoting keystrokes

grep --color=auto -nH --null -E '"(C|M)-' NEWS

** Check for two spaces at sentence end

grep --color=auto -nH --null -E '[^ ]\. [^ ]' NEWS

** Check for two spaces otherwise

grep --color=auto -nH --null -E '[^.]  ' NEWS

** Don't quote .el library names

grep --color=auto -nH --null -E "\.el'" NEWS

** Examples must start in column 4

grep --color=auto -nH --null -E "^( {1,3}| {5,})'?\(" NEWS

** 'M-x ... ' shall not use final RET

grep --color=auto -nH --null -E "RET'" NEWS

** 'M-x command' shall not be used for a single command

grep --color=auto -nH --null -E "'M-x [^[:space:]]+'" NEWS

** MIME types shall be enclosed in "..."

grep --color=auto -nH --null -E '[a-z]/[a-z]' NEWS

** Avoid double empty lines

pcregrep --color=auto -nH -M \$'\n\n\n' NEWS

** Don't use "behaviour" or "colour"

grep --color=auto -nH --null -E 'behaviour|colour' NEWS

** Keys must be enclosed with '...'

(occur "\\(^\\| \\)\\(TAB\\|RET\\|SPC\\|DEL\\|INS\\)" nil)

** Check for "GNU/Linux"

grep --color=auto -nH --null -E '(^| )Linux' NEWS

** Check for "it's", it must be "it is"

(occur "it's" nil)

** Check for "filename", it must be "file name"

(occur "filename" nil)

** Check for "doc string", it must be "docstring"

(occur "doc[[:space:]]+string" nil)

** Keywords (symbols starting with a colon) must be quoted

(occur "\\(^\\| \\):" nil)

** External program names shall be enclosed in "..."

nil ; No proper regexp :-(