[GSoC][RFC PATCH v4 1/5] doc: factor out common option

[Meet Soni <meetsoni3017@gmail.com>]

In preparation for adding documentation for `git refs list`, factor out
the common options from the `git-for-each-ref` man page into a
shareable file `for-each-ref-options.adoc` and update
`git-for-each-ref.adoc` to use an `include::` macro.

This change is a pure refactoring and results in no change to the
final rendered documentation for `for-each-ref`.

Mentored-by: Patrick Steinhardt <ps@pks.im>
Mentored-by: shejialuo <shejialuo@gmail.com>
Mentored-by: Karthik Nayak <karthik.188@gmail.com>
Signed-off-by: Meet Soni <meetsoni3017@gmail.com>
---
 Documentation/for-each-ref-options.adoc | 79 ++++++++++++++++++++++++
 Documentation/git-for-each-ref.adoc     | 80 +------------------------
 2 files changed, 80 insertions(+), 79 deletions(-)
 create mode 100644 Documentation/for-each-ref-options.adoc

diff --git a/Documentation/for-each-ref-options.adoc b/Documentation/for-each-ref-options.adoc
new file mode 100644
index 0000000000..5f3a85bf64
--- /dev/null
+++ b/Documentation/for-each-ref-options.adoc
@@ -0,0 +1,79 @@
+<pattern>...::
+	If one or more patterns are given, only refs are shown that
+	match against at least one pattern, either using fnmatch(3) or
+	literally, in the latter case matching completely or from the
+	beginning up to a slash.
+
+--stdin::
+	If `--stdin` is supplied, then the list of patterns is read from
+	standard input instead of from the argument list.
+
+--count=<count>::
+	By default the command shows all refs that match
+	`<pattern>`.  This option makes it stop after showing
+	that many refs.
+
+--sort=<key>::
+	A field name to sort on.  Prefix `-` to sort in
+	descending order of the value.  When unspecified,
+	`refname` is used.  You may use the --sort=<key> option
+	multiple times, in which case the last key becomes the primary
+	key.
+
+--format=<format>::
+	A string that interpolates `%(fieldname)` from a ref being shown and
+	the object it points at. In addition, the string literal `%%`
+	renders as `%` and `%xx` - where `xx` are hex digits - renders as
+	the character with hex code `xx`. For example, `%00` interpolates to
+	`\0` (NUL), `%09` to `\t` (TAB), and `%0a` to `\n` (LF).
++
+When unspecified, `<format>` defaults to `%(objectname) SPC %(objecttype)
+TAB %(refname)`.
+
+--color[=<when>]::
+	Respect any colors specified in the `--format` option. The
+	`<when>` field must be one of `always`, `never`, or `auto` (if
+	`<when>` is absent, behave as if `always` was given).
+
+--shell::
+--perl::
+--python::
+--tcl::
+	If given, strings that substitute `%(fieldname)`
+	placeholders are quoted as string literals suitable for
+	the specified host language.  This is meant to produce
+	a scriptlet that can directly be `eval`ed.
+
+--points-at=<object>::
+	Only list refs which points at the given object.
+
+--merged[=<object>]::
+	Only list refs whose tips are reachable from the
+	specified commit (HEAD if not specified).
+
+--no-merged[=<object>]::
+	Only list refs whose tips are not reachable from the
+	specified commit (HEAD if not specified).
+
+--contains[=<object>]::
+	Only list refs which contain the specified commit (HEAD if not
+	specified).
+
+--no-contains[=<object>]::
+	Only list refs which don't contain the specified commit (HEAD
+	if not specified).
+
+--ignore-case::
+	Sorting and filtering refs are case insensitive.
+
+--omit-empty::
+	Do not print a newline after formatted refs where the format expands
+	to the empty string.
+
+--exclude=<pattern>::
+	If one or more patterns are given, only refs which do not match
+	any excluded pattern(s) are shown. Matching is done using the
+	same rules as `<pattern>` above.
+
+--include-root-refs::
+	List root refs (HEAD and pseudorefs) apart from regular refs.
diff --git a/Documentation/git-for-each-ref.adoc b/Documentation/git-for-each-ref.adoc
index 5ef89fc0fe..c3cf1752e3 100644
--- a/Documentation/git-for-each-ref.adoc
+++ b/Documentation/git-for-each-ref.adoc
@@ -28,85 +28,7 @@ host language allowing their direct evaluation in that language.
 
 OPTIONS
 -------
-<pattern>...::
-	If one or more patterns are given, only refs are shown that
-	match against at least one pattern, either using fnmatch(3) or
-	literally, in the latter case matching completely or from the
-	beginning up to a slash.
-
---stdin::
-	If `--stdin` is supplied, then the list of patterns is read from
-	standard input instead of from the argument list.
-
---count=<count>::
-	By default the command shows all refs that match
-	`<pattern>`.  This option makes it stop after showing
-	that many refs.
-
---sort=<key>::
-	A field name to sort on.  Prefix `-` to sort in
-	descending order of the value.  When unspecified,
-	`refname` is used.  You may use the --sort=<key> option
-	multiple times, in which case the last key becomes the primary
-	key.
-
---format=<format>::
-	A string that interpolates `%(fieldname)` from a ref being shown and
-	the object it points at. In addition, the string literal `%%`
-	renders as `%` and `%xx` - where `xx` are hex digits - renders as
-	the character with hex code `xx`. For example, `%00` interpolates to
-	`\0` (NUL), `%09` to `\t` (TAB), and `%0a` to `\n` (LF).
-+
-When unspecified, `<format>` defaults to `%(objectname) SPC %(objecttype)
-TAB %(refname)`.
-
---color[=<when>]::
-	Respect any colors specified in the `--format` option. The
-	`<when>` field must be one of `always`, `never`, or `auto` (if
-	`<when>` is absent, behave as if `always` was given).
-
---shell::
---perl::
---python::
---tcl::
-	If given, strings that substitute `%(fieldname)`
-	placeholders are quoted as string literals suitable for
-	the specified host language.  This is meant to produce
-	a scriptlet that can directly be `eval`ed.
-
---points-at=<object>::
-	Only list refs which points at the given object.
-
---merged[=<object>]::
-	Only list refs whose tips are reachable from the
-	specified commit (HEAD if not specified).
-
---no-merged[=<object>]::
-	Only list refs whose tips are not reachable from the
-	specified commit (HEAD if not specified).
-
---contains[=<object>]::
-	Only list refs which contain the specified commit (HEAD if not
-	specified).
-
---no-contains[=<object>]::
-	Only list refs which don't contain the specified commit (HEAD
-	if not specified).
-
---ignore-case::
-	Sorting and filtering refs are case insensitive.
-
---omit-empty::
-	Do not print a newline after formatted refs where the format expands
-	to the empty string.
-
---exclude=<pattern>::
-	If one or more patterns are given, only refs which do not match
-	any excluded pattern(s) are shown. Matching is done using the
-	same rules as `<pattern>` above.
-
---include-root-refs::
-	List root refs (HEAD and pseudorefs) apart from regular refs.
+include::for-each-ref-options.adoc[]
 
 FIELD NAMES
 -----------
-- 
2.34.1