Inline `strip_all_flags` and simplify `ShellContext` methods

Simplify `strip_all_flags` by using `Vec::retain` instead of
reallocating. Update doc examples to use `ShellContext` methods directly
instead of the now-removed `ShellContextHelper`. Rename `as_picker` to
`to_picker` for consistency with Rust conventions. Mark doc tests as
`ignore` and add necessary imports.

2 files changed, 19 insertions, 22 deletions

diff --git a/mingling_core/src/builds/comp.rs b/mingling_core/src/builds/comp.rs
index ad70cd2..8b884c8 100644
--- a/mingling_core/src/builds/comp.rs
+++ b/mingling_core/src/builds/comp.rs
@@ -15,7 +15,10 @@ const TMPL_COMP_PWSH: &str = include_str!("../../tmpls/comps/pwsh.ps1");
 /// Scripts are written to the `OUT_DIR` (or `target/` if `OUT_DIR` is not set).
 ///
 /// # Example
-/// ```
+/// ```rust,ignore
+/// # use mingling_core::comp::ShellFlag;
+/// # use mingling_core::build::build_comp_scripts;
+///
 /// // Generate completion scripts for "myapp"
 /// build_comp_scripts("myapp").unwrap();
 ///
@@ -53,7 +56,9 @@ pub fn build_comp_scripts(name: &str) -> Result<(), std::io::Error> {
 /// resulting completion script to the target directory (typically `target/`).
 ///
 /// # Example
-/// ```
+/// ```rust,ignore
+/// # use mingling_core::comp::ShellFlag;
+/// # use mingling_core::build::build_comp_script;
 /// build_comp_script(&ShellFlag::Bash, "myapp").unwrap();
 /// ```
 pub fn build_comp_script(shell_flag: &ShellFlag, bin_name: &str) -> Result<(), std::io::Error> {
@@ -69,7 +74,9 @@ pub fn build_comp_script(shell_flag: &ShellFlag, bin_name: &str) -> Result<(), s
 /// and writes the resulting completion script to the specified directory.
 ///
 /// # Example
-/// ```
+/// ```rust,ignore
+/// # use mingling_core::comp::ShellFlag;
+/// # use mingling_core::build::build_comp_script_to;
 /// build_comp_script_to(&ShellFlag::Bash, "myapp", "target/completions").unwrap();
 /// ```
 pub fn build_comp_script_to(
@@ -93,7 +100,9 @@ pub fn build_comp_script_to(
 /// and writes the resulting completion script directly to the specified file path.
 ///
 /// # Example
-/// ```
+/// ```rust,ignore
+/// # use mingling_core::comp::ShellFlag;
+/// # use mingling_core::build::build_comp_script_to_file;
 /// build_comp_script_to_file(&ShellFlag::Bash, "myapp", "target/completions/myapp_comp.sh").unwrap();
 /// ```
 pub fn build_comp_script_to_file(
diff --git a/mingling_core/src/comp/shell_ctx.rs b/mingling_core/src/comp/shell_ctx.rs
index dd2aa86..3134cd6 100644
--- a/mingling_core/src/comp/shell_ctx.rs
+++ b/mingling_core/src/comp/shell_ctx.rs
@@ -106,14 +106,10 @@ impl ShellContext {
     ///
     /// ```
     /// # use mingling_core::ShellContext;
-    /// # use mingling_macros::suggest;
-    /// # use mingling::comp_tools::ShellContextHelper;
-    ///
     /// let ctx = ShellContext::default();
-    /// let helper = ShellContextHelper::from(ctx);
     ///
     /// // Check if either "--insert" or "-i" appears exactly once
-    /// if helper.filling_argument_first(["--insert", "-i"]) {
+    /// if ctx.filling_argument_first(["--insert", "-i"]) {
     ///     // Perform action that should only happen once, example:
     ///     // return suggest! {
     ///     //     "A", "B", "C"
@@ -135,7 +131,7 @@ impl ShellContext {
                 return true;
             }
         }
-        return false;
+        false
     }
 
     /// Checks if the previous word in the command line arguments matches any of the given flags.
@@ -148,14 +144,10 @@ impl ShellContext {
     ///
     /// ```
     /// # use mingling_core::ShellContext;
-    /// # use mingling_macros::suggest;
-    /// # use mingling::comp_tools::ShellContextHelper;
-    ///
     /// let ctx = ShellContext::default();
-    /// let helper = ShellContextHelper::from(ctx);
     ///
     /// // Check if the previous word is either "--file" or "-f"
-    /// if helper.filling_argument(["--file", "-f"]) {
+    /// if ctx.filling_argument(["--file", "-f"]) {
     ///     // The user is likely expecting a file argument next, example:
     ///     // return suggest! {
     ///     //     "src/main.rs", "Cargo.toml", "README.md"
@@ -168,7 +160,7 @@ impl ShellContext {
                 return true;
             }
         }
-        return false;
+        false
     }
 
     /// Checks if the user is currently typing a flag argument.
@@ -188,14 +180,10 @@ impl ShellContext {
     ///
     /// ```
     /// # use mingling_core::ShellContext;
-    /// # use mingling_macros::suggest;
-    /// # use mingling::comp_tools::ShellContextHelper;
-    ///
     /// let ctx = ShellContext::default();
-    /// let helper = ShellContextHelper::from(ctx);
     ///
     /// // Check if the user is typing a flag
-    /// if helper.typing_argument() {
+    /// if ctx.typing_argument() {
     ///     // The user is likely entering a flag, example:
     ///     // return suggest! {
     ///     //     "--help", "--version", "--verbose"
@@ -220,7 +208,7 @@ impl ShellContext {
     /// when the user has already typed certain flags. The method processes both
     /// regular suggestion sets and file completion suggestions differently.
     pub fn strip_typed_argument(&self, suggest: Suggest) -> Suggest {
-        let typed = Self::get_typed_arguments(&self);
+        let typed = Self::get_typed_arguments(self);
         match suggest {
             Suggest::Suggest(mut set) => {
                 set.retain(|item| !typed.contains(item.suggest()));