git/ci/test-documentation.sh
Patrick Steinhardt f60fec6a16 ci/test-documentation: work around SyntaxWarning in Python 3.12
In Python 3.6, unrecognized escape sequences in regular expressions
started to produce a DeprecationWarning [1]. In Python 3.12, this was
upgraded to a SyntaxWarning and will eventually be raised even further
to a SyntaxError. We indirectly hit such unrecognized escape sequences
via Asciidoc, which results in a bunch of warnings:

    $ asciidoc -o /dev/null git-cat-file.txt
    <unknown>:1: SyntaxWarning: invalid escape sequence '\S'
    <unknown>:1: SyntaxWarning: invalid escape sequence '\S'

This in turn causes our "ci/test-documentation.sh" script to fail, as it
checks that stderr of `make doc` is empty.

These escape sequences seem to be part of Asciidoc itself. In the long
term, we should probably consider dropping support for Asciidoc in favor
of Asciidoctor. Upstream also considers itself to be legacy software and
recommends to move away from it [2]:

    It is suggested that unless you specifically require the AsciiDoc.py
    toolchain, you should find a processor that handles the modern
    AsciiDoc syntax.

For now though, let's expand its lifetime a little bit more by filtering
out these new warnings. We should probably reconsider once the warnings
are upgraded to errors by Python.

[1]: https://docs.python.org/3/reference/lexical_analysis.html#string-and-bytes-literals
[2]: 6d9f76cff0/README.md (asciidocpy)

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-06-06 08:20:51 -07:00

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#!/usr/bin/env bash
#
# Perform sanity checks on documentation and build it.
#
. ${0%/*}/lib.sh
filter_log () {
sed -e '/^GIT_VERSION = /d' \
-e "/constant Gem::ConfigMap is deprecated/d" \
-e '/^ \* new asciidoc flags$/d' \
-e '/stripped namespace before processing/d' \
-e '/Attributed.*IDs for element/d' \
-e '/SyntaxWarning: invalid escape sequence/d' \
"$1"
}
make check-builtins
make check-docs
# Build docs with AsciiDoc
make doc > >(tee stdout.log) 2> >(tee stderr.raw >&2)
cat stderr.raw
filter_log stderr.raw >stderr.log
test ! -s stderr.log
test -s Documentation/git.html
test -s Documentation/git.xml
test -s Documentation/git.1
grep '<meta name="generator" content="AsciiDoc ' Documentation/git.html
rm -f stdout.log stderr.log stderr.raw
check_unignored_build_artifacts
# Build docs with AsciiDoctor
make clean
make USE_ASCIIDOCTOR=1 doc > >(tee stdout.log) 2> >(tee stderr.raw >&2)
cat stderr.raw
filter_log stderr.raw >stderr.log
test ! -s stderr.log
test -s Documentation/git.html
grep '<meta name="generator" content="Asciidoctor ' Documentation/git.html
rm -f stdout.log stderr.log stderr.raw
check_unignored_build_artifacts
save_good_tree