tests: work around `tac` not being portable
Introduce a tac.py helper and use it. Sigh.
Differential Revision: https://phab.mercurial-scm.org/D5238
--- a/tests/test-fix.t Tue Nov 06 11:22:16 2018 -0500
+++ b/tests/test-fix.t Wed Nov 07 12:15:36 2018 -0500
@@ -1,6 +1,11 @@
A script that implements uppercasing of specific lines in a file. This
approximates the behavior of code formatters well enough for our tests.
+ $ TAC="$TESTTMP/tac.py"
+ $ cat > $TAC <<EOF
+ > import sys
+ > print('\n'.join(sys.stdin.read().splitlines()[::-1]))
+ > EOF
$ UPPERCASEPY="$TESTTMP/uppercase.py"
$ cat > $UPPERCASEPY <<EOF
> import sys
@@ -1117,7 +1122,7 @@
$ printf "first\nsecond\n" > bar.txt
$ hg add -q
$ hg fix -w --config fix.sometool:fileset=bar.txt \
- > --config fix.sometool:command=tac
+ > --config fix.sometool:command="$PYTHON $TAC"
the fix.tool:fileset config name is deprecated; please rename it to fix.tool:pattern
$ cat foo.whole