feat: option to disable requiring git repository for git-ignore rules

changelog/new.txt

@@ -9,3 +9,4 @@ New features:
 - REST backend: Now allows to use custom TLS root certificates.
 - restore: The restore algorithm has been improved and should now be faster for remote repositories.
 - restore: Files are now allocated just before being first processed. This allows easier resumed restores.
+- New option: `no-require-git` for backup - if enabled, a git repository is not required to apply `git-ignore` rule.

config/full.toml

@@ -7,7 +7,7 @@
 
 # Global options: These options are used for all commands. 
 [global]
-use-profile = [] 
+use-profile = []
 log-level = "info" # any of "off", "error", "warn", "info", "debug", "trace"; default: "info"
 log-file = "/path/to/rustic.log" # Default: not set
 no-progress = false
@@ -68,6 +68,7 @@ iglob = []
 glob-file = []
 iglob-file = []
 git-ignore = false
+no-require-git = false
 exclude-if-present = [".nobackup", "CACHEDIR.TAG"] # Default: not set
 one-file-system = false
 exclude-larger-than = "100MB" # Default: not set
@@ -97,6 +98,7 @@ iglob = []
 glob-file = []
 iglob-file = []
 git-ignore = false
+no-require-git = false
 exclude-if-present = [".nobackup", "CACHEDIR.TAG"] # Default: not set
 one-file-system = false
 exclude-larger-than = "100MB" # Default: not set

crates/rustic_core/src/backend/ignore.rs

@@ -96,6 +96,11 @@ pub struct LocalSourceFilterOptions {
     #[cfg_attr(feature = "merge", merge(strategy = merge::bool::overwrite_false))]
     git_ignore: bool,
 
+    /// Do not require a git repository to apply git-ignore rule
+    #[cfg_attr(feature = "clap", clap(long, help_heading = "Exclude options"))]
+    #[cfg_attr(feature = "merge", merge(strategy = merge::bool::overwrite_false))]
+    no_require_git: bool,
+
     /// Exclude contents of directories containing this filename (can be specified multiple times)
     #[cfg_attr(
         feature = "clap",
@@ -177,6 +182,7 @@ impl LocalSource {
             .hidden(false)
             .ignore(false)
             .git_ignore(filter_opts.git_ignore)
+            .require_git(!filter_opts.no_require_git)
             .sort_by_file_path(Path::cmp)
             .same_file_system(filter_opts.one_file_system)
             .max_filesize(filter_opts.exclude_larger_than.map(|s| s.as_u64()))