# titlecase を Homebrew でインストール

titlecase のインストール経路、実行ファイル、メタデータ、AI エージェント向けセキュリティノートを確認します。

## インストール

```sh
sudo av install brew:titlecase
```

追加のインストールコマンド:

### macOS

- Homebrew (100%):

```sh
brew install titlecase
```

  証拠: local Homebrew formula metadata

## パッケージ情報

- **パッケージキー:** brew:titlecase
- **パッケージマネージャ:** Homebrew
- **バージョン:** 1.015
- **ソース概要:** Script to convert text to title case
- **ホームページ:** <http://plasmasturm.org/code/titlecase/>
- **リポジトリ:** <https://github.com/ap/titlecase>
- **生成日時:** 2026-08-03T19:37:03+00:00

## 実行可能ファイル

- titlecase (エイリアス)

## インストール挙動

- Bottle: 利用不可

## バージョンと鮮度

- ページ生成日: 2026-08-03
- マネージャ版: 1.015
## プロジェクトの歴史と使われ方

titlecase is a small Perl command-line script and library-style function for converting text to title case. Its history is tied to John Gruber's Daring Fireball title-casing script and Aristotle Pagaltzis's refactoring/test-suite version.

### プロジェクトの歴史

John Gruber published his original Perl title-case script on Daring Fireball in May 2008, explaining that he used it to standardize Linked List headlines and that it handled small words, internal capitalization, domains, edge cases such as AT&T and Q&A, and first/last word capitalization.

In August 2008 Gruber credited Aristotle Pagaltzis with refactoring the Perl script in a more straightforward way, fixing edge cases, and turning David Gouch's test cases into a proper test suite. The plasmasturm project page describes titlecase as that refactoring and points to the program, test suite, and Git repository.

### 採用の歴史

titlecase's adoption is intentionally small. It is a one-command text-processing utility for editors, scripts, publication workflows, and package users who want the Gruber-style title-casing behavior without embedding a larger formatting library.

The input metadata lists Homebrew as its package-manager surface. That matches its package-nerd profile: tiny Perl script, stdin/stdout behavior, reproducible test cases, and a narrow job that is convenient to install globally.

### 使われ方

The plasmasturm documentation says the program under test should read any number of titles from standard input, one title per line, and write corrected titles to standard output in the same form. The script also exposes a titlecase function internally and includes a -f option to force lowercasing before title-casing.

The test suite is a Perl script that can be passed a command line for invoking any program that performs title casing, making the project useful not only as a tool but also as a compatibility reference for other implementations.

### パッケージ好きにとっての重要性

titlecase matters in the package-nerd niche because it is the kind of single-file text utility that earns a package slot through reliability and provenance rather than breadth. Its value is traceable behavior: a known editorial algorithm, a test corpus, and a simple stdin/stdout interface.

### タイムライン

- 2008-05-20: John Gruber published the original Daring Fireball Title Case Perl script.
- 2008-07-28: The ap/titlecase GitHub repository was created.
- 2008-08-13: Gruber credited Aristotle Pagaltzis's refactoring and test suite as better than the original script.
- 2009-11-04: The plasmasturm titlecase page published the refactored project page.
- 2018-02-26: The plasmasturm page shows an update date.

### Related projects

- John Gruber's original Daring Fireball Title Case script is the direct ancestor.
- David Gouch's JavaScript title-case implementation and tests are part of the documented test-suite lineage.
- Other ports mentioned by Gruber include JavaScript, Python, Ruby, PHP, Objective-C, and Nu implementations.

### ソース

- <http://plasmasturm.org/code/titlecase>
- <https://api.github.com/repos/ap/titlecase>
- <https://daringfireball.net/2008/05/title_case>
- <https://daringfireball.net/2008/08/title_case_update>
- <https://github.com/ap/titlecase>
- <https://raw.githubusercontent.com/ap/titlecase/master/test.pl>
- <https://raw.githubusercontent.com/ap/titlecase/master/titlecase>
- source_facts.package-manager


## セキュリティノート

narrow executable package without higher-risk signals.

- **Geiger リスク:** グリーン / 低
- narrow executable package without higher-risk signals


## 関連リンク

- [titlecase](https://pkg.so/ja/pkg/cargo/titlecase/) - Same normalized package name exists in another local package ecosystem.
- [titlecase](https://pkg.so/ja/pkg/npm/titlecase/) - Same normalized package name exists in another local package ecosystem.

## Combined YAML source

View the package source record on GitHub. [combined/titlecase.yml](https://github.com/mxcl/pkgdb/blob/main/combined/titlecase.yml)


## ソース

- pkg.so package database
- Geiger risk classifier
- curated package history
- pkgdb category and tag curation
- cross-ecosystem install command graph