tests: simplify printenv calls
Make printenv executable so that we don't need python, TESTDIR, or
quoting.
tests: simplify calls to dummyssh
dummyssh is marked executable and is in the path, no need for python,
TESTDIR, or quotes.
tests: drop explicit $TESTDIR from executables
$TESTDIR is added to the path, so this is superfluous. Also,
inconsistent use of quotes means we might have broken on tests with
paths containing spaces.
templater: do not preprocess template string in "if" expression (
issue4714)
The problem was spotted at
5ab28a2e9962, that says "this patch invokes it
with "strtoken='rawstring'" in "_evalifliteral()", because "t" is the result
of "arg" evaluation and it should be "string-escape"-ed if "arg" is "string"
expression." This workaround is no longer valid since
890845af1ac2 introduced
strict parsing of '\{'.
Instead, we should interpret bare token as "string" or "rawstring" template.
This is what buildmap() does at parsing phase.