[PATCH v1 0/6] t: fix unused files, part 2

[Andrei Rybak <rybak.a.v@gmail.com>]

Creation of files from redirecting output of Git commands in tests has been
removed for files which aren't being used for assertions.  CC'ed are authors of
the affected tests.

This is a continuation of part 1:
  https://lore.kernel.org/git/20230312201520.370234-1-rybak.a.v@gmail.com/T/#u

Overall, this is similar to part 1, except that additionally in patch 4/6
creation of an unused file that isn't output of a git command has been removed.
Patch 2/6 fixes broken comments, found during development of this series.

Since part 1 I've upgraded my 'check_unused_files.py' script (invoked in the
same way as in part 1) and found a bit more issues in t0??? and t1???, and
overall have gone up to t2???.

Upgraded script:

    from sys import argv
    import re

    script = argv[1]

    git_with_outputs_pattern = re.compile('git [^&\"]*?[>](?!/)([-a-z_./]*)( 2[>](?!/)([a-z_.-]*))?')

    out_read_index = -1
    err_read_index = -1

    def clean_up_filename(fn):
        if fn and '/' in fn:
            from os import path
            return path.basename(fn)
        return fn

    while True:
        res = git_with_outputs_pattern.search(script)
        if res is None:
            break
        end_index = res.span()[1]
        out_filename = clean_up_filename(res.group(1))
        err_filename = clean_up_filename(res.group(3))

        script = script[end_index:]

        if out_filename:
            out_read_index = script.find(out_filename)
            if out_read_index < 0:
                print("File '" + out_filename + "' is unused")
                print("Script: ")
                print(script)
                from sys import exit
                exit(1)
        if err_filename and err_filename != '&1':
            err_read_index = script.find(err_filename)
            if err_read_index < 0:
                print("File '" + err_filename + "' is unused")
                print("Script: ")
                print(script)
                from sys import exit
                exit(2)
        if out_read_index >= 0:
            script = script[out_read_index + len(out_filename):]
        elif err_read_index >= 0:
            script = script[err_read_index + len(err_filename):]

Andrei Rybak (6):
  t0300: don't create unused file
  t1300: fix config file syntax error descriptions
  t1300: don't create unused files
  t1450: don't create unused files
  t1502: don't create unused files
  t2019: don't create unused files

 t/t0300-credentials.sh            |  2 +-
 t/t1300-config.sh                 | 10 +++++-----
 t/t1450-fsck.sh                   |  5 +----
 t/t1502-rev-parse-parseopt.sh     |  6 +++---
 t/t2019-checkout-ambiguous-ref.sh |  4 ++--
 5 files changed, 12 insertions(+), 15 deletions(-)

-- 
2.40.0