Can't have two exclude patterns with different letter case

[andreyfedoseev]

Describe the problem, feature or ask a question:

I am trying to exclude some cache folders from the backups.

In particular, I want to exclude all folders named cache or Cache located in /home/user/var:

/home/user/.var/**/cache
/home/user/.var/**/Cache

The problem is that I can add either of these patterns, but not both at the same time. It seems that the list of exclude patterns is case insensitive, and considers patterns which different letter case as duplicates.

This does not affect the actual backups. If I exclude, /home/user/.var/**/Cache, then cache is going to be copied anyway.

backintime --diagnostics

{
    "backintime": {
        "name": "Back In Time",
        "version": "1.5.3",
        "running-as-root": false,
        "latest-config-version": 6,
        "local-config-file": "/home/UsernameReplaced/.config/backintime/config",
        "local-config-file-found": true,
        "global-config-file": "/etc/backintime/config",
        "global-config-file-found": false,
        "started-from": "/usr/share/backintime/common",
        "user-callback": "/home/UsernameReplaced/.config/backintime/user-callback",
        "keyring-supported": true
    },
    "host-setup": {
        "OS": {
            "/etc/os-release": "CachyOS",
            "/etc/arch-release": "\n",
            "/etc/lsb-release": "DISTRIB_ID=cachyos\nDISTRIB_RELEASE=\"rolling\"\nDISTRIB_DESCRIPTION=\"CachyOS\"\n"
        },
        "platform": "Linux-6.13.2-2-cachyos-x86_64-with-glibc2.41",
        "system": "Linux #1 SMP PREEMPT_DYNAMIC Sat, 08 Feb 2025 11:26:09 +0000",
        "display-system": "wayland",
        "locale": "en_US, UTF-8",
        "PATH": "/home/UsernameReplaced/.cargo/bin:/home/UsernameReplaced/go/bin:/home/UsernameReplaced/bin:/usr/local/sbin:/usr/local/bin:/usr/bin:/var/lib/flatpak/exports/bin:/usr/lib/jvm/default/bin:/usr/bin/site_perl:/usr/bin/vendor_perl:/usr/bin/core_perl:/usr/lib/rustup/bin",
        "RSYNC_OLD_ARGS": "(not set)",
        "RSYNC_PROTECT_ARGS": "(not set)"
    },
    "python-setup": {
        "python": "3.13.1 main Dec 23 2024 22:19:34 CPython GCC 14.2.1 20240910",
        "python-executable": "/usr/bin/python",
        "python-executable-symlink": true,
        "python-executable-resolved": "/usr/bin/python3.13",
        "sys.path": [
            "/usr/share/backintime/qt/plugins",
            "/usr/share/backintime/common/plugins",
            "/usr/share/backintime/plugins",
            "/usr/share/backintime/common",
            "/usr/lib/python313.zip",
            "/usr/lib/python3.13",
            "/usr/lib/python3.13/lib-dynload",
            "/usr/lib/python3.13/site-packages"
        ],
        "qt": {
            "Version": "PyQt 6.8.1 / Qt 6.8.2",
            "Theme": "Papirus-Dark",
            "Theme Search Paths": [
                "/home/UsernameReplaced/.local/share/icons",
                "/var/lib/flatpak/exports/share/icons",
                "/usr/share/icons",
                ":/icons"
            ],
            "Fallback Theme": "breeze",
            "Fallback Search Paths": []
        }
    },
    "external-programs": {
        "rsync": {
            "version": "3.4.1",
            "protocol": "32.0",
            "capabilities": "file_bits: 64; inum_bits: 64; timestamp_bits: 64; long_int_bits: 64; socketpairs: True; symlinks: True; symtimes: True; hardlinks: True; hardlink_specials: True; hardlink_symlinks: True; IPv6: True; atimes: True; batchfiles: True; inplace: True; append: True; ACLs: True; xattrs: True; secluded_args: optional; iconv: True; prealloc: True; stop_at: True; crtimes: False",
            "optimizations": "SIMD_roll: True; asm_roll: False; openssl_crypto: True; asm_MD5: False",
            "checksum_list": "xxh128, xxh3, xxh64, md5, md4, sha1, none",
            "compress_list": "zstd, lz4, zlibx, zlib, none",
            "daemon_auth_list": "sha512, sha256, sha1, md5, md4"
        },
        "ssh": "OpenSSH_9.9p1, OpenSSL 3.4.1 11 Feb 2025",
        "sshfs": "3.7.3",
        "encfs": "(no encfs)",
        "shell": "/bin/fish",
        "shell-version": "fish, version 3.7.1"
    }
}