refactor: rename plugin features with type prefix for consistency

- Plugin features now use type_ prefix (meta_magic, filter_grep, etc.)
- Added meta_all_musl and filter_all_musl for MUSL-compatible builds
- grep filter plugin made optional via filter_grep feature flag
- Removed regex crate from grep-related code, uses strip_prefix instead
- Updated CHANGELOG.md with breaking change documentation

CHANGELOG.md

@@ -9,6 +9,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+- New `filter_grep` feature to optionally include the grep filter plugin (regex-based line filtering). Disabling this feature removes the `regex` crate and its ~800 KiB dependency stack from the binary.
+- New `meta_all_musl` feature for all MUSL-compatible meta plugins (excludes `meta_magic` which requires libmagic)
+- New `filter_all_musl` feature for all MUSL-compatible filter plugins
 - Database index on `items(ts)` column for faster ORDER BY sorting
 - Server API `ItemInfo` now includes `file_size` — actual filesystem-reported size of the item data file
 
@@ -23,6 +26,17 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Removed `once_cell` crate (replaced with `std::sync::LazyLock` from Rust 1.80)
 - Removed `lazy_static` crate (replaced with `std::sync::LazyLock`)
 
+### Breaking
+
+- Plugin feature flags renamed with type prefix for consistency:
+  - `magic` → `meta_magic`
+  - `infer` → `meta_infer`
+  - `tree_magic_mini` → `meta_tree_magic_mini`
+  - `tokens` → `meta_tokens`
+  - `grep` → `filter_grep`
+  - `all-meta-plugins` → `meta_all`
+  - `all-filter-plugins` → `filter_all`
+
 ### Fixed
 
 - CLI help text typo: "metatdata" → "metadata" in `--get` and `--info` descriptions

Cargo.toml

@@ -46,7 +46,7 @@ tree_magic_mini = { version = "3.2", optional = true }
 nix = { version = "0.30", features = ["fs", "process"] }
 comfy-table = "7.2"
 pwhash = "1.0"
-regex = "1.10"
+regex = { version = "1.10", optional = true }
 ringbuf = "0.4"
 rusqlite = { version = "0.37", features = ["bundled", "array", "chrono"] }
 rusqlite_migration = "2.3"
@@ -85,14 +85,15 @@ tiktoken-rs = { version = "0.9", optional = true }
 tempfile = "3.3"
 
 [features]
-# Default features include core compression engines and swagger UI
+# Default features include core compression engines plugins that support MUSL
 default = [
         "client",
         "gzip",
-        "infer",
+        "filter_grep",
+        "meta_infer",
         "lz4",
-        "tokens",
-        "tree_magic_mini",
+        "meta_tokens",
+        "meta_tree_magic_mini",
         "zstd"
 ]
 
@@ -106,14 +107,18 @@ bzip2 = []
 xz = []
 zstd = ["dep:zstd"]
 
-# Plugin features (meta and filter)
-all-meta-plugins = ["dep:magic", "dep:infer", "dep:tree_magic_mini"]
-all-filter-plugins = []
+# Meta plugin features
+meta_magic = ["dep:magic"]
+meta_infer = ["dep:infer"]
+meta_tree_magic_mini = ["dep:tree_magic_mini"]
+meta_tokens = ["dep:tiktoken-rs"]
+meta_all = ["meta_magic", "meta_infer", "meta_tree_magic_mini", "meta_tokens"]
+meta_all_musl = ["meta_infer", "meta_tree_magic_mini", "meta_tokens"]
 
-# Individual plugin features
-magic = ["dep:magic"]
-infer = ["dep:infer"]
-tree_magic_mini = ["dep:tree_magic_mini"]
+# Filter plugin features
+filter_grep = ["dep:regex"]
+filter_all = ["filter_grep"]
+filter_all_musl = ["filter_grep"]
 
 # Swagger UI feature
 swagger = ["dep:utoipa-swagger-ui"]
@@ -121,8 +126,5 @@ swagger = ["dep:utoipa-swagger-ui"]
 # Client feature (HTTP client for remote server)
 client = ["dep:ureq", "dep:os_pipe"]
 
-# Token counting feature (LLM token support via tiktoken)
-tokens = ["dep:tiktoken-rs"]
-
 [dev-dependencies]
 rand = "0.9"

src/filter_plugin/mod.rs

@@ -2,6 +2,7 @@ use std::io::{Read, Result, Write};
 use std::str::FromStr;
 use strum::EnumString;
 
+#[cfg(feature = "filter_grep")]
 pub mod grep;
 /// Filter plugin module for processing input streams.
 ///
@@ -16,7 +17,7 @@ pub mod grep;
 /// ```
 /// # use std::io::{Read, Write};
 /// # use keep::filter_plugin::parse_filter_string;
-/// let mut chain = parse_filter_string("head_lines(10)|grep(pattern=error)")?;
+/// let mut chain = parse_filter_string("head_lines(10)|tail_lines(5)")?;
 /// # let mut reader: &mut dyn Read = &mut std::io::empty();
 /// # let mut writer: Vec<u8> = Vec::new();
 /// # chain.filter(&mut reader, &mut writer)?;
@@ -26,12 +27,13 @@ pub mod head;
 pub mod skip;
 pub mod strip_ansi;
 pub mod tail;
-#[cfg(feature = "tokens")]
+#[cfg(feature = "meta_tokens")]
 pub mod tokens;
 pub mod utils;
 
 use std::collections::HashMap;
 
+#[cfg(feature = "filter_grep")]
 pub use grep::GrepFilter;
 pub use head::{HeadBytesFilter, HeadLinesFilter};
 pub use skip::{SkipBytesFilter, SkipLinesFilter};
@@ -199,13 +201,14 @@ pub enum FilterType {
     TailLines,
     SkipBytes,
     SkipLines,
+    #[cfg(feature = "filter_grep")]
     Grep,
     StripAnsi,
-    #[cfg(feature = "tokens")]
+    #[cfg(feature = "meta_tokens")]
     HeadTokens,
-    #[cfg(feature = "tokens")]
+    #[cfg(feature = "meta_tokens")]
     SkipTokens,
-    #[cfg(feature = "tokens")]
+    #[cfg(feature = "meta_tokens")]
     TailTokens,
 }
 
@@ -356,9 +359,8 @@ impl FilterChain {
     /// # Examples
     ///
     /// ```
-    /// # use keep::filter_plugin::{FilterChain, GrepFilter};
+    /// # use keep::filter_plugin::FilterChain;
     /// let mut chain = FilterChain::new();
-    /// chain.add_plugin(Box::new(GrepFilter::new("error".to_string()).unwrap()));
     /// ```
     pub fn add_plugin(&mut self, plugin: Box<dyn FilterPlugin>) {
         self.plugins.push(plugin);
@@ -535,6 +537,7 @@ fn create_filter_with_options(
     // Get the default options for this filter type by creating a temporary instance
     // To do this, we need to create a default instance of the appropriate filter
     let option_defs = match filter_type {
+        #[cfg(feature = "filter_grep")]
         FilterType::Grep => grep::GrepFilter::new("".to_string())?.options(),
         FilterType::HeadBytes => head::HeadBytesFilter::new(0).options(),
         FilterType::HeadLines => head::HeadLinesFilter::new(0).options(),
@@ -543,11 +546,11 @@ fn create_filter_with_options(
         FilterType::SkipBytes => skip::SkipBytesFilter::new(0).options(),
         FilterType::SkipLines => skip::SkipLinesFilter::new(0).options(),
         FilterType::StripAnsi => strip_ansi::StripAnsiFilter::new().options(),
-        #[cfg(feature = "tokens")]
+        #[cfg(feature = "meta_tokens")]
         FilterType::HeadTokens => tokens::HeadTokensFilter::new(0).options(),
-        #[cfg(feature = "tokens")]
+        #[cfg(feature = "meta_tokens")]
         FilterType::SkipTokens => tokens::SkipTokensFilter::new(0).options(),
-        #[cfg(feature = "tokens")]
+        #[cfg(feature = "meta_tokens")]
         FilterType::TailTokens => tokens::TailTokensFilter::new(0).options(),
     };
 
@@ -617,6 +620,7 @@ fn create_specific_filter(
     options: &HashMap<String, serde_json::Value>,
 ) -> Result<Box<dyn FilterPlugin>> {
     match filter_type {
+        #[cfg(feature = "filter_grep")]
         FilterType::Grep => {
             let pattern = options
                 .get("pattern")
@@ -717,7 +721,7 @@ fn create_specific_filter(
             }
             Ok(Box::new(strip_ansi::StripAnsiFilter::new()))
         }
-        #[cfg(feature = "tokens")]
+        #[cfg(feature = "meta_tokens")]
         FilterType::HeadTokens => {
             let count = options
                 .get("count")
@@ -735,7 +739,7 @@ fn create_specific_filter(
             f.encoding = encoding;
             Ok(Box::new(f))
         }
-        #[cfg(feature = "tokens")]
+        #[cfg(feature = "meta_tokens")]
         FilterType::SkipTokens => {
             let count = options
                 .get("count")
@@ -753,7 +757,7 @@ fn create_specific_filter(
             f.encoding = encoding;
             Ok(Box::new(f))
         }
-        #[cfg(feature = "tokens")]
+        #[cfg(feature = "meta_tokens")]
         FilterType::TailTokens => {
             let count = options
                 .get("count")
@@ -774,7 +778,7 @@ fn create_specific_filter(
     }
 }
 
-#[cfg(feature = "tokens")]
+#[cfg(feature = "meta_tokens")]
 fn parse_encoding_option(
     options: &std::collections::HashMap<String, serde_json::Value>,
 ) -> (crate::tokenizer::TokenEncoding, crate::tokenizer::Tokenizer) {

src/lib.rs

@@ -45,7 +45,7 @@ pub mod services;
 #[cfg(feature = "client")]
 pub mod client;
 
-#[cfg(feature = "tokens")]
+#[cfg(feature = "meta_tokens")]
 pub mod tokenizer;
 
 // Re-export Args struct for library usage
@@ -56,9 +56,12 @@ pub use services::CoreError;
 
 // Import all filter plugins to ensure they register themselves
 #[allow(unused_imports)]
-use filter_plugin::{grep, head, skip, strip_ansi, tail};
+#[cfg(feature = "filter_grep")]
+use filter_plugin::grep;
+#[allow(unused_imports)]
+use filter_plugin::{head, skip, strip_ansi, tail};
 
-#[cfg(feature = "tokens")]
+#[cfg(feature = "meta_tokens")]
 #[allow(unused_imports)]
 use filter_plugin::tokens as token_filters;
 
@@ -66,19 +69,19 @@ use crate::meta_plugin::{
     cwd, digest, env, exec, hostname, keep_pid, read_rate, read_time, shell, shell_pid, user,
 };
 
-#[cfg(feature = "magic")]
+#[cfg(feature = "meta_magic")]
 #[allow(unused_imports)]
 use crate::meta_plugin::magic_file;
 
-#[cfg(feature = "tokens")]
+#[cfg(feature = "meta_tokens")]
 #[allow(unused_imports)]
 use crate::meta_plugin::tokens;
 
-#[cfg(feature = "infer")]
+#[cfg(feature = "meta_infer")]
 #[allow(unused_imports)]
 use crate::meta_plugin::infer_plugin;
 
-#[cfg(feature = "tree_magic_mini")]
+#[cfg(feature = "meta_tree_magic_mini")]
 #[allow(unused_imports)]
 use crate::meta_plugin::tree_magic_mini;
 

src/meta_plugin/magic_file.rs

@@ -1,6 +1,6 @@
-#[cfg(feature = "magic")]
+#[cfg(feature = "meta_magic")]
 use magic::{Cookie, CookieFlags};
-#[cfg(not(feature = "magic"))]
+#[cfg(not(feature = "meta_magic"))]
 use std::process::{Command, Stdio};
 
 use std::io::{self, Write};
@@ -16,12 +16,12 @@ use crate::meta_plugin::{
 // separate cookies can be used from different threads concurrently without
 // synchronization. Using thread_local! avoids unsafe impl Send since the
 // storage is inherently !Send.
-#[cfg(feature = "magic")]
+#[cfg(feature = "meta_magic")]
 thread_local! {
     static MAGIC_COOKIE: std::cell::RefCell<Option<Cookie>> = const { std::cell::RefCell::new(None) };
 }
 
-#[cfg(feature = "magic")]
+#[cfg(feature = "meta_magic")]
 #[derive(Debug)]
 pub struct MagicFileMetaPluginImpl {
     buffer: Vec<u8>,
@@ -30,7 +30,7 @@ pub struct MagicFileMetaPluginImpl {
     base: BaseMetaPlugin,
 }
 
-#[cfg(feature = "magic")]
+#[cfg(feature = "meta_magic")]
 impl MagicFileMetaPluginImpl {
     pub fn new(
         options: Option<std::collections::HashMap<String, serde_yaml::Value>>,
@@ -113,7 +113,7 @@ impl MagicFileMetaPluginImpl {
     }
 }
 
-#[cfg(feature = "magic")]
+#[cfg(feature = "meta_magic")]
 impl MetaPlugin for MagicFileMetaPluginImpl {
     fn is_finalized(&self) -> bool {
         self.is_finalized
@@ -222,10 +222,10 @@ impl MetaPlugin for MagicFileMetaPluginImpl {
     }
 }
 
-#[cfg(feature = "magic")]
+#[cfg(feature = "meta_magic")]
 pub use MagicFileMetaPluginImpl as MagicFileMetaPlugin;
 
-#[cfg(not(feature = "magic"))]
+#[cfg(not(feature = "meta_magic"))]
 #[derive(Debug)]
 pub struct FallbackMagicFileMetaPlugin {
     buffer: Vec<u8>,
@@ -234,7 +234,7 @@ pub struct FallbackMagicFileMetaPlugin {
     base: BaseMetaPlugin,
 }
 
-#[cfg(not(feature = "magic"))]
+#[cfg(not(feature = "meta_magic"))]
 impl FallbackMagicFileMetaPlugin {
     pub fn new(
         options: Option<std::collections::HashMap<String, serde_yaml::Value>>,
@@ -336,7 +336,7 @@ impl FallbackMagicFileMetaPlugin {
     }
 }
 
-#[cfg(not(feature = "magic"))]
+#[cfg(not(feature = "meta_magic"))]
 impl MetaPlugin for FallbackMagicFileMetaPlugin {
     fn is_finalized(&self) -> bool {
         self.is_finalized
@@ -441,7 +441,7 @@ impl MetaPlugin for FallbackMagicFileMetaPlugin {
     }
 }
 
-#[cfg(not(feature = "magic"))]
+#[cfg(not(feature = "meta_magic"))]
 pub use FallbackMagicFileMetaPlugin as MagicFileMetaPlugin;
 
 use crate::meta_plugin::register_meta_plugin;

src/meta_plugin/mod.rs

@@ -8,7 +8,7 @@ pub mod digest;
 pub mod env;
 pub mod exec;
 pub mod hostname;
-#[cfg(feature = "infer")]
+#[cfg(feature = "meta_infer")]
 pub mod infer_plugin;
 pub mod keep_pid;
 pub mod magic_file;
@@ -17,32 +17,32 @@ pub mod read_time;
 pub mod shell;
 pub mod shell_pid;
 pub mod text;
-#[cfg(feature = "tokens")]
+#[cfg(feature = "meta_tokens")]
 pub mod tokens;
-#[cfg(feature = "tree_magic_mini")]
+#[cfg(feature = "meta_tree_magic_mini")]
 pub mod tree_magic_mini;
 pub mod user;
 
 pub use digest::DigestMetaPlugin;
 pub use exec::MetaPluginExec;
-#[cfg(feature = "magic")]
+#[cfg(feature = "meta_magic")]
 pub use magic_file::MagicFileMetaPlugin;
 // pub use text::TextMetaPlugin; // Removed duplicate
 pub use cwd::CwdMetaPlugin;
 pub use env::EnvMetaPlugin;
 pub use hostname::HostnameMetaPlugin;
-#[cfg(feature = "infer")]
+#[cfg(feature = "meta_infer")]
 pub use infer_plugin::InferMetaPlugin;
 pub use keep_pid::KeepPidMetaPlugin;
 pub use read_rate::ReadRateMetaPlugin;
 pub use read_time::ReadTimeMetaPlugin;
 pub use shell::ShellMetaPlugin;
 pub use shell_pid::ShellPidMetaPlugin;
-#[cfg(feature = "tree_magic_mini")]
+#[cfg(feature = "meta_tree_magic_mini")]
 pub use tree_magic_mini::TreeMagicMiniMetaPlugin;
 pub use user::UserMetaPlugin;
 
-#[cfg(not(feature = "magic"))]
+#[cfg(not(feature = "meta_magic"))]
 pub use magic_file::FallbackMagicFileMetaPlugin as MagicFileMetaPlugin;
 
 type PluginConstructor = fn(

src/modes/common.rs

@@ -22,7 +22,6 @@ use clap::Command;
 use clap::error::ErrorKind;
 use comfy_table::{Attribute, Cell, ContentArrangement, Table};
 use log::debug;
-use regex::Regex;
 use serde::{Deserialize, Serialize};
 use std::collections::HashMap;
 use std::env;
@@ -56,23 +55,18 @@ pub enum OutputFormat {
     Yaml,
 }
 
-static KEEP_META_RE: std::sync::LazyLock<Regex> =
-    std::sync::LazyLock::new(|| Regex::new(r"^KEEP_META_(.+)$").unwrap());
-
 pub const IMPORT_FORMAT_ERROR: &str =
     "Unsupported import format: {} (expected .keep.tar or .meta.yml)";
 
 pub fn get_meta_from_env() -> HashMap<String, String> {
     debug!("COMMON: Getting meta from KEEP_META_*");
     let mut meta_env: HashMap<String, String> = HashMap::new();
+    const PREFIX: &str = "KEEP_META_";
     for (key, value) in env::vars() {
-        if let Some(meta_name_caps) = KEEP_META_RE.captures(key.as_str()) {
-            let name = meta_name_caps.get(1).map(|m| m.as_str().to_string());
-            if let Some(name) = name {
-                if name != "PLUGINS" {
+        if let Some(name) = key.strip_prefix(PREFIX) {
+            if !name.is_empty() && name != "PLUGINS" {
                 debug!("COMMON: Found meta: {}={}", name, value);
-                    meta_env.insert(name, value);
-                }
+                meta_env.insert(name.to_string(), value);
             }
         }
     }

src/modes/server/common.rs

@@ -532,6 +532,7 @@ pub struct TagsQuery {
 /// ```rust
 /// use keep::modes::server::common::ListItemsQuery;
 /// let query = ListItemsQuery {
+///     ids: None,
 ///     tags: Some("important".to_string()),
 ///     order: Some("newest".to_string()),
 ///     start: Some(0),

src/modes/server/mod.rs

@@ -179,13 +179,13 @@ async fn run_server(
     let addr: SocketAddr = bind_address.parse()?;
 
     // Warn if authentication is enabled without TLS
-    if config.password.is_some() || config.password_hash.is_some() || config.jwt_secret.is_some() {
-        if config.cert_file.is_none() || config.key_file.is_none() {
+    if (config.password.is_some() || config.password_hash.is_some() || config.jwt_secret.is_some())
+        && (config.cert_file.is_none() || config.key_file.is_none())
+    {
         log::warn!(
             "SECURITY: Authentication enabled but TLS is not configured. Credentials will be transmitted in plain text!"
         );
     }
-    }
 
     // Build the app into a service
     let service = app.into_make_service_with_connect_info::<SocketAddr>();

src/tests/meta_plugin/mod.rs

@@ -3,10 +3,10 @@
 #[cfg(test)]
 pub mod digest_tests;
 
-#[cfg(feature = "infer")]
+#[cfg(feature = "meta_infer")]
 #[cfg(test)]
 pub mod infer_tests;
 
-#[cfg(feature = "tree_magic_mini")]
+#[cfg(feature = "meta_tree_magic_mini")]
 #[cfg(test)]
 pub mod tree_magic_mini_tests;