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authorAndy Whitcroft <apw@shadowen.org>2006-09-21 09:19:17 (GMT)
committerJunio C Hamano <junkio@cox.net>2006-09-21 19:38:38 (GMT)
commit1729fa9878ed8c99ae0bb2aecced557618d0c894 (patch)
treeeaba12f105f34f4777bcd9b3a1c81a1818e3d886 /Documentation/git-for-each-ref.txt
parent9f613ddd21cbd05bfc139d9b1551b5780aa171f6 (diff)
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git-for-each-ref: improve the documentation on scripting modes
When reading the synopsis for git-for-each-ref it is easy to miss the obvious power of --shell and family. Call this feature out in the primary paragragh. Also add more description to the examples to indicate which features we are demonstrating. Finally add a very simple eval based example in addition to the very complex one to give a gentler introduction. Signed-off-by: Andy Whitcroft <apw@shadowen.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
Diffstat (limited to 'Documentation/git-for-each-ref.txt')
-rw-r--r--Documentation/git-for-each-ref.txt25
1 files changed, 21 insertions, 4 deletions
diff --git a/Documentation/git-for-each-ref.txt b/Documentation/git-for-each-ref.txt
index 6649f79..d5fdcef 100644
--- a/Documentation/git-for-each-ref.txt
+++ b/Documentation/git-for-each-ref.txt
@@ -17,7 +17,7 @@ according to the given `<format>`, after sorting them according
to the given set of `<key>`s. If `<max>` is given, stop after
showing that many refs. The interporated values in `<format>`
can optionally be quoted as string literals in the specified
-host language.
+host language allowing their direct evaluation in that language.
OPTIONS
-------
@@ -97,7 +97,8 @@ returns an empty string instead.
EXAMPLES
--------
-Show the most recent 3 tagged commits::
+An example directly producing formatted text. Show the most recent
+3 tagged commits::
------------
#!/bin/sh
@@ -112,7 +113,23 @@ Ref: %(*refname)
' 'refs/tags'
------------
-A bit more elaborate report on tags::
+
+A simple example showing the use of shell eval on the output,
+demonstrating the use of --shell. List the prefixes of all heads::
+------------
+#!/bin/sh
+
+git-for-each-ref --shell --format="ref=%(refname)" refs/heads | \
+while read entry
+do
+ eval "$entry"
+ echo `dirname $ref`
+done
+------------
+
+
+A bit more elaborate report on tags, demonstrating that the format
+may be an entire script::
------------
#!/bin/sh
@@ -156,7 +173,7 @@ Its message reads as:
fi
'
-eval=`git-for-each-ref -s --format="$fmt" \
+eval=`git-for-each-ref --shell --format="$fmt" \
--sort='*objecttype' \
--sort=-taggerdate \
refs/tags`