On Sat, Aug 04, 2007 at 02:18:11PM +0200, martin f krafft wrote:
> The behaviour is absolutely unclear from the manpage and defies my
> logic. Can you elaborate a bit, even though this is off-topic?
The original sed code in question was:
sed -ne '/^URL: */{
s///p
q
}' "$GIT_DIR/remotes/$1"
There are a few things to note:
1. -n means "do not print lines by default"
2. sed addresses consist of an address (in this case a regex meaning
"do this for lines that match the regex") and a command
3. The braces start a set of commands, so that for lines matching the
address, we do all of the commands.
4. An empty matching portion for a regex means "use the last regex".
So this script comes down to:
- don't write any lines except the ones we match
- find a line that starts with URL:
- replace the URL: part with nothing
- print the result
- quit
It could be more simply written as:
sed -ne 's/^URL: *//pq'
which uses the substitution as an address, but I don't know whether that
was allowed in the original sed.
-Peff
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