templatekw: introduce obsfate keyword
Introduce an obsfate printer that uses all helpers functions defined in
obsutil to get all the obsfate-related data and format a string according to
the current format in test-obsmarker-template.t.
Then, introduce an obsfate templatekw that uses the obsfateprinter to return a
list of strings.
The goal is not to replace existing obsfate template functions but to propose
a default, good-enough and easily usable obsfate definition for end-users that
don't want to customize it. Such output would ultimately get included in the
default log output.
Here are some output examples for a commit amended:
rewritten using amend as 5:a9b1f8652753 by test (at 1970-01-01 00:00 +0000)
Next patches will make the output dependent on the verbosity.
Exemple of use-cases:
For having the obsfate on a single-line between brackets:
{if(obsfate, " [{join(obsfate, "; ")}]")}
For having the obsfate in several lines:
{if(obsfate, "{obsfate % " Obsfate: {fate}\n"}")}
#!/bin/rc
# 9diff - Mercurial extdiff wrapper for diff(1)
rfork e
fn getfiles {
cd $1 &&
for(f in `{du -as | awk '{print $2}'})
test -f $f && echo `{cleanname $f}
}
fn usage {
echo >[1=2] usage: 9diff [diff options] parent child root
exit usage
}
opts=()
while(~ $1 -*){
opts=($opts $1)
shift
}
if(! ~ $#* 3)
usage
# extdiff will set the parent and child to a single file if there is
# only one change. If there are multiple changes, directories will be
# set. diff(1) does not cope particularly with directories; instead we
# do the recursion ourselves and diff each file individually.
if(test -f $1)
diff $opts $1 $2
if not{
# extdiff will create a snapshot of the working copy to prevent
# conflicts during the diff. We circumvent this behavior by
# diffing against the repository root to produce plumbable
# output. This is antisocial.
for(f in `{sort -u <{getfiles $1} <{getfiles $2}}){
file1=$1/$f; test -f $file1 || file1=/dev/null
file2=$3/$f; test -f $file2 || file2=/dev/null
diff $opts $file1 $file2
}
}
exit ''