Tmain: list common extras when NONE is passed to --list-extras

Signed-off-by: Masatake YAMATO <[email protected]>

Author: masatake

Tmain/list-extras.d/run.sh

@@ -5,3 +5,4 @@ CTAGS=$1
 
 ${CTAGS} --quiet --options=NONE --extras='*' --with-list-header --list-extras
 ${CTAGS} --quiet --options=NONE --extras='*' --with-list-header --machinable --list-extras
+${CTAGS} --quiet --options=NONE --extras= --with-list-header --list-extras=NONE

Tmain/list-extras.d/stdout-expected.txt

@@ -26,3 +26,12 @@ s	subparser	yes	NONE	no	Include tags generated by subparsers
 -	configPrefixed	yes	Kconfig	no	prepend CONFIG_ to config names
 -	funcmap	yes	QemuHX	no	Include mapping SQMP to C function name
 -	whitespaceSwapped	yes	Robot	no	Include tags swapping whitespace and underscore chars
+#LETTER NAME      ENABLED LANGUAGE FIXED DESCRIPTION
+-       anonymous no      NONE     no    Include tags for non-named objects like lambda
+F       fileScope no      NONE     no    Include tags of file scope
+f       inputFile no      NONE     no    Include an entry for the base file name of every input file
+g       guest     no      NONE     no    Include tags generated by guest parsers
+p       pseudo    no      NONE     no    Include pseudo tags
+q       qualified no      NONE     no    Include an extra class-qualified tag entry for each tag
+r       reference no      NONE     no    Include reference tags
+s       subparser no      NONE     no    Include tags generated by subparsers

docs/man/ctags.1.rst

@@ -1016,9 +1016,11 @@ Listing Options
 ``--list-excludes``
 	Lists the current exclusion patterns used to exclude files.
 
-``--list-extras[=(<language>|all)]``
+``--list-extras[=(<language>|NONE|all)]``
 	Lists the extras recognized for either the specified *<language>* or
-	``all`` languages. See "`Extras`_" subsection to know what are extras.
+	``all`` languages. If ``NONE`` is specified, it lists only extras
+	common in all languages.
+	See "`Extras`_" subsection to know what are extras.
 	``all`` is used as default value if the option argument is omitted.
 
 	An extra can be enabled or disabled with ``--extras=`` for common

main/options.c

@@ -2085,6 +2085,8 @@ static void processListExtrasOption (
 				xtagColprintAddLanguageLines (table, i);
 		}
 	}
+	else if (strcasecmp (parameter, RSV_NONE) == 0)
+		xtagColprintAddCommonLines (table);
 	else
 	{
 		langType language = getNamedLanguage (parameter, 0);

man/ctags.1.rst.in

@@ -1016,9 +1016,11 @@ Listing Options
 ``--list-excludes``
 	Lists the current exclusion patterns used to exclude files.
 
-``--list-extras[=(<language>|all)]``
+``--list-extras[=(<language>|NONE|all)]``
 	Lists the extras recognized for either the specified *<language>* or
-	``all`` languages. See "`Extras`_" subsection to know what are extras.
+	``all`` languages. If ``NONE`` is specified, it lists only extras
+	common in all languages.
+	See "`Extras`_" subsection to know what are extras.
 	``all`` is used as default value if the option argument is omitted.
 
 	An extra can be enabled or disabled with ``--extras=`` for common