From d5b800200ab19b8dbb52535f459899e06885d66b Mon Sep 17 00:00:00 2001
From: 魏曹先生 <1992414357@qq.com>
Date: Mon, 10 Aug 2026 16:54:46 +0800
Subject: feat(parselib): remove invalid naming case variants

Remove `Title`, `Lower`, and `Upper` variants from
`ParserStyleNamingCase` as they are not valid naming conventions.
---
 CHANGELOG.md                     |  9 +++++++++
 arg_picker/src/parselib/style.rs | 15 ---------------
 2 files changed, 9 insertions(+), 15 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 369a480..7cbe748 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -404,6 +404,15 @@ None
 
     _Behavioral semantics are preserved — the same configuration states are expressible in both the old boolean form and the new enum form, but the typed enums eliminate impossible states (e.g., both `verbose` and `quiet` set simultaneously) and make the intent of each setting explicit through named variants._
 
+5. **[`modify_picker`]** Removed the invalid naming style variants from `ParserStyleNamingCase`: `Title`, `Lower`, and `Upper`. These variants originally corresponded to the `just_fmt` macros `title_case!`, `lower_case!`, and `upper_case!`, but in practice these styles are not valid naming conventions. They have therefore been removed from the enum definition and its `to_format_string` / related formatting matches.
+
+    **Changes involved:**
+
+    - **`ParserStyleNamingCase` enum** — Removed the `Title`, `Lower`, and `Upper` variants along with their doc comments.
+    - **Formatting implementation** — Removed the `Self::Title => just_fmt::title_case!(...)`, `Self::Lower => just_fmt::lower_case!(...)`, and `Self::Upper => just_fmt::upper_case!(...)` branches from the enum's `fmt` match.
+
+    _This is a pure deletion change with no behavioral replacement. If downstream code used the `Title`, `Lower`, or `Upper` variants, it needs to switch to other naming styles (such as `Pascal`, `Kebab`, `Snake`, or `Dot`)._
+
 ---
 
 ### Release 0.3.0 (2026-07-27)
diff --git a/arg_picker/src/parselib/style.rs b/arg_picker/src/parselib/style.rs
index 81dfe72..9f7b38f 100644
--- a/arg_picker/src/parselib/style.rs
+++ b/arg_picker/src/parselib/style.rs
@@ -150,18 +150,6 @@ pub enum ParserStyleNamingCase {
     ///
     /// Example: `brew.coffee`
     Dot,
-    /// `Title Case` format: words are separated by spaces, each word capitalized.
-    ///
-    /// Example: `Brew Coffee`
-    Title,
-    /// `lower case` format: words are separated by spaces, all lowercase.
-    ///
-    /// Example: `brew coffee`
-    Lower,
-    /// `UPPER CASE` format: words are separated by spaces, all uppercase.
-    ///
-    /// Example: `BREW COFFEE`
-    Upper,
 }
 
 impl ParserStyleNamingCase {
@@ -192,9 +180,6 @@ impl ParserStyleNamingCase {
             Self::Kebab => just_fmt::kebab_case!(s.into()).into(),
             Self::Snake => just_fmt::snake_case!(s.into()).into(),
             Self::Dot => just_fmt::dot_case!(s.into()).into(),
-            Self::Title => just_fmt::title_case!(s.into()).into(),
-            Self::Lower => just_fmt::lower_case!(s.into()).into(),
-            Self::Upper => just_fmt::upper_case!(s.into()).into(),
         }
     }
 }
-- 
cgit