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Visit website Recent posts Updated on $DATE date Design Coded Chords - Design A personal blog Zola2025-09-20T00:00:00+00:00https://codedchords.dev/tags/design/atom.xml フォント編集ソフト OTEdit問題 2025-09-20T00:00:00+00:00 2025-09-20T00:00:00+00:00 Toshiyuki Yoshida https://codedchords.dev/blog/2025/09/otedit-problem/ <details> <summary>Table of Contents</summary> <!-- toc --> </details> <p>フォント編集ソフト「OTEdit」で作成されたフォントの空グリフ問題について解説。Adobe-Japan1文字集合選択時に発生する空グリフによりフォールバック機能が正常に動作しない問題と、Pythonスクリプトを使った修正方法を紹介。</p> <h2 id="OTEditとは">OTEditとは</h2> <p><strong>OTEdit</strong>とは、<a rel="external" href="https://opentype.jp/">武蔵システム</a>が販売する OpenTypeフォントを作成・編集を行なうアプリケーションです。 Windows版とMac版が販売されています。</p> <p>この手のアプリケーションとしては比較的安価で、使用しているフォント作家の方も多いようです。</p> <h2 id="OTEditの問題">OTEditの問題</h2> <p><em>(以下の考察は、OTEditの試用版による短時間の検証に基づいています。全ての機能を検証できている訳ではないので誤りを含む可能性があります。)</em></p> <p>OTEditではAdobe-Japan1-3、Adobe-Japan1-4、 Adobe-Japan1-7の3種の文字集合のフォントを作成できます。 新規作成時に選択した文字集合について全てのグリフを設定することを前提としているようです。 OTEditではフォントの新規作成時に選択した文字集合から文字の削除ができず、グリフが作成されなくとも「空グリフ」と 各文字コードとグリフのcmapを作成してしまいます。</p> <p>すべてのフォントがAdobe社の策定した日本語文字集合規格で作成されればよいのですが、 実際にはいずれかの文字集合を選択してもすべてのグリフをサポートしないフォントも多いようです。 例えば、IPAが配布するIPAフォントです。このフォントがどんなツールを使用して作成されたか不明ですが、 JIS X 0213:2012の文字集合をサポートしておりAdobe社の文字集合規格には従っていません。 Adobeの規格と並べると下表のような食い違いがあります。</p> <table><thead><tr><th>文字セット</th><th>総文字数</th><th>JIS第1～2水準（6,355字）</th><th>JIS第3～4水準（3,695字）</th><th>JIS規格外文字（異体字・独自文字）</th><th>主な特徴</th></tr></thead><tbody> <tr><td>JIS X 0213:2012</td><td>11,233文字</td><td>完全対応</td><td>完全対応</td><td>含まない</td><td>公的規格・政府標準</td></tr> <tr><td>Adobe-Japan1-3</td><td>9,354文字</td><td>完全対応</td><td>非対応</td><td>機種依存文字等含む</td><td>一般用途標準</td></tr> <tr><td>Adobe-Japan1-4</td><td>15,444文字</td><td>完全対応</td><td>一部対応</td><td>多数の独自文字・異体字含む</td><td>商業印刷用</td></tr> <tr><td>Adobe-Japan1-7</td><td>23,060文字</td><td>完全対応</td><td>完全対応</td><td>大量の独自文字・異体字含む</td><td>最上位規格</td></tr> </tbody></table> <p>このようなケースでは、OTEditがcmapを生成しますが作者がグリフを用意していない文字には「空グリフ」をマッピングしてしまいます。</p> <p>通常の使用ではあまり問題にならないかもしれませんが、フォント表示の際にフォールバックを前提にしている ターミナルやブラウザなどで使用するとマズいことになります。 本来であれば指定したフォントがグリフを持たない場合は、別のフォントのグリフが表示されます。 しかしOTEditで作成したフォントでは、「空グリフ」が設定されている可能性が高いので「空白」が表示されてしまいます。</p> <h2 id="フォントの修正">フォントの修正</h2> <p>最近購入した中村書体室の「カドマ-R」でこの不具合の遭遇したので、 作者の方に相談させていただき手元のフォントに修正を掛けました。</p> <p>対応は、空グリフと思われる文字を調査し該当文字についてcmapからエントリーを削除するという乱暴なものです。 以下がそのスクリプトです。</p> <h3 id="分析スクリプト">分析スクリプト</h3> <pre class="giallo z-code"><code data-lang="python" data-name="font_analyze.py"><span class="giallo-l"><span class="z-punctuation z-definition z-comment z-comment">#!/usr/bin/env python3</span></span> <span class="giallo-l"><span class="z-punctuation z-definition z-comment z-comment"># -*- coding: utf-8 -*-</span></span> <span class="giallo-l"></span> <span class="giallo-l"></span> <span class="giallo-l"><span class="z-punctuation z-definition z-comment z-comment"># HomebrewのPython環境でFontToolsを使用</span></span> <span class="giallo-l"><span class="z-source">sys</span><span class="z-punctuation">.</span><span class="z-source">path</span><span class="z-punctuation">.</span><span class="z-meta z-function-call z-python">insert</span><span class="z-punctuation">(</span><span class="z-constant z-numeric">0</span><span class="z-punctuation">,</span><span class="z-punctuation z-definition z-string z-string"> &#39;/opt/homebrew/Cellar/fonttools/4.59.2/libexec/lib/python3.13/site-packages&#39;</span><span class="z-punctuation">)</span></span> <span class="giallo-l"></span> <span class="giallo-l"><span class="z-keyword z-control z-flow z-python">try</span><span class="z-punctuation">:</span></span> <span class="giallo-l"><span class="z-keyword"> from</span><span class="z-source"> fontTools</span><span class="z-punctuation">.</span><span class="z-source">ttLib</span><span class="z-keyword"> import</span><span class="z-source"> TTFont</span></span> <span class="giallo-l"><span class="z-keyword"> from</span><span class="z-source"> fontTools</span><span class="z-punctuation">.</span><span class="z-source">pens</span><span class="z-punctuation">.</span><span class="z-source">recordingPen</span><span class="z-keyword"> import</span><span class="z-source"> RecordingPen</span></span> <span class="giallo-l"><span class="z-keyword z-control z-flow z-python">except</span><span class="z-support z-type z-exception z-python"> ImportError</span><span class="z-keyword z-control z-flow z-python"> as</span><span class="z-source"> e</span><span class="z-punctuation">:</span></span> <span class="giallo-l"><span class="z-support z-function z-builtin z-python"> print</span><span class="z-punctuation">(</span><span class="z-storage z-type z-string z-python">f</span><span class="z-string">&quot;Import error: </span><span class="z-constant z-character z-format z-placeholder z-other z-python">{</span><span class="z-meta z-function-call z-arguments z-python">e</span><span class="z-constant z-character z-format z-placeholder z-other z-python">}</span><span class="z-string">&quot;</span><span class="z-punctuation">)</span></span> <span class="giallo-l"><span class="z-source"> sys</span><span class="z-punctuation">.</span><span class="z-meta z-function-call z-python">exit</span><span class="z-punctuation">(</span><span class="z-constant z-numeric">1</span><span class="z-punctuation">)</span></span> <span class="giallo-l"></span> <span class="giallo-l"><span class="z-storage z-type z-function z-python">def</span><span class="z-entity z-name z-function"> analyze_font_glyphs</span><span class="z-punctuation">(</span><span class="z-variable z-parameter">font_path</span><span class="z-punctuation">):</span></span> <span class="giallo-l"><span class="z-punctuation z-definition z-string z-string"> &quot;&quot;&quot;フォントファイルを分析して空のグリフとスペースグリフを区別する&quot;&quot;&quot;</span></span> <span class="giallo-l"></span> <span class="giallo-l"><span class="z-source"> font</span><span class="z-keyword z-operator"> =</span><span class="z-meta z-function-call z-python"> TTFont</span><span class="z-punctuation">(</span><span class="z-meta z-function-call z-arguments z-python">font_path</span><span class="z-punctuation">)</span></span> <span class="giallo-l"><span class="z-source"> cmap</span><span class="z-keyword z-operator"> =</span><span class="z-source"> font</span><span class="z-punctuation">.</span><span class="z-meta z-function-call z-python">getBestCmap</span><span class="z-punctuation">()</span></span> <span class="giallo-l"></span> <span class="giallo-l"><span class="z-keyword z-control z-flow z-python"> if</span><span class="z-punctuation z-definition z-string z-string"> &#39;CFF &#39;</span><span class="z-keyword z-operator z-logical z-python"> in</span><span class="z-source"> font</span><span class="z-punctuation">:</span></span> <span class="giallo-l"><span class="z-source"> cff</span><span class="z-keyword z-operator"> =</span><span class="z-meta z-indexed-name z-python"> font</span><span class="z-punctuation">[</span><span class="z-punctuation z-definition z-string">&#39;</span><span class="z-string">CFF </span><span class="z-punctuation z-definition z-string">&#39;</span><span class="z-punctuation">]</span></span> <span class="giallo-l"><span class="z-source"> charstrings</span><span class="z-keyword z-operator"> =</span><span class="z-source"> cff</span><span class="z-punctuation">.</span><span class="z-meta z-indexed-name z-python">cff</span><span class="z-punctuation">[</span><span class="z-constant z-numeric">0</span><span class="z-punctuation">].</span><span class="z-source">CharStrings</span></span> <span class="giallo-l"><span class="z-keyword z-control z-flow z-python"> else</span><span class="z-punctuation">:</span></span> <span class="giallo-l"><span class="z-support z-function z-builtin z-python"> print</span><span class="z-punctuation">(</span><span class="z-punctuation z-definition z-string z-string">&quot;This is not a CFF font&quot;</span><span class="z-punctuation">)</span></span> <span class="giallo-l"><span class="z-keyword z-control z-flow z-python"> return</span></span> <span class="giallo-l"></span> <span class="giallo-l"><span class="z-source"> hmtx</span><span class="z-keyword z-operator"> =</span><span class="z-meta z-indexed-name z-python"> font</span><span class="z-punctuation">[</span><span class="z-punctuation z-definition z-string">&#39;</span><span class="z-string">hmtx</span><span class="z-punctuation z-definition z-string">&#39;</span><span class="z-punctuation">]</span></span> <span class="giallo-l"><span class="z-source"> results</span><span class="z-keyword z-operator"> =</span><span class="z-punctuation"> []</span></span> <span class="giallo-l"></span> <span class="giallo-l"><span class="z-source"> space_codes</span><span class="z-keyword z-operator"> =</span><span class="z-punctuation"> [</span><span class="z-storage z-type">0x</span><span class="z-constant z-numeric">0020</span><span class="z-punctuation">,</span><span class="z-storage z-type"> 0x</span><span class="z-constant z-numeric">3000</span><span class="z-punctuation">]</span><span class="z-punctuation z-definition z-comment z-comment"> # SPACE, IDEOGRAPHIC SPACE</span></span> <span class="giallo-l"></span> <span class="giallo-l"><span class="z-keyword z-control z-flow z-python"> for</span><span class="z-source"> unicode_code</span><span class="z-punctuation">,</span><span class="z-source"> glyph_name</span><span class="z-keyword z-control z-flow z-python"> in</span><span class="z-support z-function z-builtin z-python"> sorted</span><span class="z-punctuation">(</span><span class="z-meta z-function-call z-arguments z-python">cmap</span><span class="z-punctuation">.</span><span class="z-meta z-function-call z-python">items</span><span class="z-punctuation">()):</span></span> <span class="giallo-l"><span class="z-keyword z-control z-flow z-python"> if</span><span class="z-source"> glyph_name</span><span class="z-keyword z-operator z-logical z-python"> in</span><span class="z-source"> hmtx</span><span class="z-punctuation">.</span><span class="z-source">metrics</span><span class="z-punctuation">:</span></span> <span class="giallo-l"><span class="z-source"> width</span><span class="z-punctuation">,</span><span class="z-source"> lsb</span><span class="z-keyword z-operator"> =</span><span class="z-source"> hmtx</span><span class="z-punctuation">.</span><span class="z-meta z-indexed-name z-python">metrics</span><span class="z-punctuation">[</span><span class="z-meta z-item-access z-python">glyph_name</span><span class="z-punctuation">]</span></span> <span class="giallo-l"><span class="z-keyword z-control z-flow z-python"> else</span><span class="z-punctuation">:</span></span> <span class="giallo-l"><span class="z-source"> width</span><span class="z-punctuation">,</span><span class="z-source"> lsb</span><span class="z-keyword z-operator"> =</span><span class="z-constant z-numeric"> 0</span><span class="z-punctuation">,</span><span class="z-constant z-numeric"> 0</span></span> <span class="giallo-l"></span> <span class="giallo-l"><span class="z-keyword z-control z-flow z-python"> if</span><span class="z-source"> glyph_name</span><span class="z-keyword z-operator z-logical z-python"> in</span><span class="z-source"> charstrings</span><span class="z-punctuation">:</span></span> <span class="giallo-l"><span class="z-source"> charstring</span><span class="z-keyword z-operator"> =</span><span class="z-meta z-indexed-name z-python"> charstrings</span><span class="z-punctuation">[</span><span class="z-meta z-item-access z-python">glyph_name</span><span class="z-punctuation">]</span></span> <span class="giallo-l"></span> <span class="giallo-l"><span class="z-source"> pen</span><span class="z-keyword z-operator"> =</span><span class="z-meta z-function-call z-python"> RecordingPen</span><span class="z-punctuation">()</span></span> <span class="giallo-l"><span class="z-keyword z-control z-flow z-python"> try</span><span class="z-punctuation">:</span></span> <span class="giallo-l"><span class="z-source"> charstring</span><span class="z-punctuation">.</span><span class="z-meta z-function-call z-python">draw</span><span class="z-punctuation">(</span><span class="z-meta z-function-call z-arguments z-python">pen</span><span class="z-punctuation">)</span></span> <span class="giallo-l"><span class="z-source"> commands</span><span class="z-keyword z-operator"> =</span><span class="z-source"> pen</span><span class="z-punctuation">.</span><span class="z-source">value</span></span> <span class="giallo-l"><span class="z-source"> has_drawing</span><span class="z-keyword z-operator"> =</span><span class="z-support z-function z-builtin z-python"> len</span><span class="z-punctuation">(</span><span class="z-meta z-function-call z-arguments z-python">commands</span><span class="z-punctuation">)</span><span class="z-keyword z-operator"> &gt;</span><span class="z-constant z-numeric"> 0</span></span> <span class="giallo-l"><span class="z-keyword z-control z-flow z-python"> except</span><span class="z-support z-type z-exception z-python"> Exception</span><span class="z-punctuation">:</span></span> <span class="giallo-l"><span class="z-source"> has_drawing</span><span class="z-keyword z-operator"> =</span><span class="z-constant z-language z-python"> False</span></span> <span class="giallo-l"></span> <span class="giallo-l"><span class="z-punctuation z-definition z-comment z-comment"> # グリフの分類</span></span> <span class="giallo-l"><span class="z-source"> is_space_char</span><span class="z-keyword z-operator"> =</span><span class="z-source"> unicode_code</span><span class="z-keyword z-operator z-logical z-python"> in</span><span class="z-source"> space_codes</span></span> <span class="giallo-l"></span> <span class="giallo-l"><span class="z-keyword z-control z-flow z-python z-keyword z-operator z-logical z-python"> if not</span><span class="z-source"> has_drawing</span><span class="z-punctuation">:</span></span> <span class="giallo-l"><span class="z-keyword z-control z-flow z-python"> if</span><span class="z-source"> width</span><span class="z-keyword z-operator"> &gt;</span><span class="z-constant z-numeric"> 0</span><span class="z-punctuation">:</span></span> <span class="giallo-l"><span class="z-keyword z-control z-flow z-python"> if</span><span class="z-source"> is_space_char</span><span class="z-punctuation">:</span></span> <span class="giallo-l"><span class="z-source"> glyph_type</span><span class="z-keyword z-operator"> =</span><span class="z-punctuation z-definition z-string z-string"> &quot;SPACE&quot;</span></span> <span class="giallo-l"><span class="z-keyword z-control z-flow z-python"> else</span><span class="z-punctuation">:</span></span> <span class="giallo-l"><span class="z-source"> glyph_type</span><span class="z-keyword z-operator"> =</span><span class="z-punctuation z-definition z-string z-string"> &quot;BLANK_WITH_WIDTH&quot;</span></span> <span class="giallo-l"><span class="z-keyword z-control z-flow z-python"> else</span><span class="z-punctuation">:</span></span> <span class="giallo-l"><span class="z-source"> glyph_type</span><span class="z-keyword z-operator"> =</span><span class="z-punctuation z-definition z-string z-string"> &quot;EMPTY&quot;</span></span> <span class="giallo-l"><span class="z-keyword z-control z-flow z-python"> else</span><span class="z-punctuation">:</span></span> <span class="giallo-l"><span class="z-source"> glyph_type</span><span class="z-keyword z-operator"> =</span><span class="z-punctuation z-definition z-string z-string"> &quot;NORMAL&quot;</span></span> <span class="giallo-l"></span> <span class="giallo-l"><span class="z-source"> results</span><span class="z-punctuation">.</span><span class="z-meta z-function-call z-python">append</span><span class="z-punctuation">({</span></span> <span class="giallo-l"><span class="z-punctuation z-definition z-string z-string"> &#39;unicode&#39;</span><span class="z-punctuation">:</span><span class="z-storage z-type z-string z-python"> f</span><span class="z-string">&quot;U+</span><span class="z-constant z-character z-format z-placeholder z-other z-python">{</span><span class="z-meta z-function-call z-arguments z-python">unicode_code</span><span class="z-storage z-type">:04X</span><span class="z-constant z-character z-format z-placeholder z-other z-python">}</span><span class="z-string">&quot;</span><span class="z-punctuation">,</span></span> <span class="giallo-l"><span class="z-punctuation z-definition z-string z-string"> &#39;code&#39;</span><span class="z-punctuation">:</span><span class="z-meta z-function-call z-arguments z-python"> unicode_code</span><span class="z-punctuation">,</span></span> <span class="giallo-l"><span class="z-punctuation z-definition z-string z-string"> &#39;char&#39;</span><span class="z-punctuation">:</span><span class="z-support z-function z-builtin z-python"> chr</span><span class="z-punctuation">(</span><span class="z-meta z-function-call z-arguments z-python">unicode_code</span><span class="z-punctuation">),</span></span> <span class="giallo-l"><span class="z-punctuation z-definition z-string z-string"> &#39;glyph_name&#39;</span><span class="z-punctuation">:</span><span class="z-meta z-function-call z-arguments z-python"> glyph_name</span><span class="z-punctuation">,</span></span> <span class="giallo-l"><span class="z-punctuation z-definition z-string z-string"> &#39;type&#39;</span><span class="z-punctuation">:</span><span class="z-meta z-function-call z-arguments z-python"> glyph_type</span><span class="z-punctuation">,</span></span> <span class="giallo-l"><span class="z-punctuation z-definition z-string z-string"> &#39;width&#39;</span><span class="z-punctuation">:</span><span class="z-meta z-function-call z-arguments z-python"> width</span><span class="z-punctuation">,</span></span> <span class="giallo-l"><span class="z-punctuation z-definition z-string z-string"> &#39;commands_count&#39;</span><span class="z-punctuation">:</span><span class="z-support z-function z-builtin z-python"> len</span><span class="z-punctuation">(</span><span class="z-meta z-function-call z-arguments z-python">commands</span><span class="z-punctuation">)</span><span class="z-keyword z-control z-flow z-python"> if</span><span class="z-meta z-function-call z-arguments z-python"> has_drawing</span><span class="z-keyword z-control z-flow z-python"> else</span><span class="z-constant z-numeric"> 0</span><span class="z-punctuation">,</span></span> <span class="giallo-l"><span class="z-punctuation"> })</span></span> <span class="giallo-l"></span> <span class="giallo-l"><span class="z-keyword z-control z-flow z-python"> return</span><span class="z-source"> results</span></span></code></pre> <p>判定基準は、次の通りです。</p> <ul> <li>NORMAL: 描画データがあるグリフ</li> <li>SPACE: スペース文字（U+0020, U+3000）で描画データなし</li> <li>BLANK_WITH_WIDTH: スペース以外で幅はあるが描画データなし → 削除対象</li> <li>EMPTY: 幅や描画データがない → 削除対象</li> </ul> <h3 id="自動修正スクリプト">自動修正スクリプト</h3> <pre class="giallo z-code"><code data-lang="python" data-name="font_cleaner_final.py"><span class="giallo-l"><span class="z-storage z-type z-function z-python">def</span><span class="z-entity z-name z-function"> fix_font_cmap_only</span><span class="z-punctuation">(</span><span class="z-variable z-parameter">input_path</span><span class="z-punctuation">,</span><span class="z-variable z-parameter"> output_path</span><span class="z-punctuation">):</span></span> <span class="giallo-l"><span class="z-punctuation z-definition z-string z-string"> &quot;&quot;&quot;OTEで作成されたフォントのcmapテーブルから空グリフエントリを削除&quot;&quot;&quot;</span></span> <span class="giallo-l"></span> <span class="giallo-l"><span class="z-source"> font</span><span class="z-keyword z-operator"> =</span><span class="z-meta z-function-call z-python"> TTFont</span><span class="z-punctuation">(</span><span class="z-meta z-function-call z-arguments z-python">input_path</span><span class="z-punctuation">)</span></span> <span class="giallo-l"><span class="z-source"> original_cmap</span><span class="z-keyword z-operator"> =</span><span class="z-source"> font</span><span class="z-punctuation">.</span><span class="z-meta z-function-call z-python">getBestCmap</span><span class="z-punctuation">()</span></span> <span class="giallo-l"></span> <span class="giallo-l"><span class="z-keyword z-control z-flow z-python"> if</span><span class="z-punctuation z-definition z-string z-string"> &#39;CFF &#39;</span><span class="z-keyword z-operator z-logical z-python"> in</span><span class="z-source"> font</span><span class="z-punctuation">:</span></span> <span class="giallo-l"><span class="z-source"> cff</span><span class="z-keyword z-operator"> =</span><span class="z-meta z-indexed-name z-python"> font</span><span class="z-punctuation">[</span><span class="z-punctuation z-definition z-string">&#39;</span><span class="z-string">CFF </span><span class="z-punctuation z-definition z-string">&#39;</span><span class="z-punctuation">]</span></span> <span class="giallo-l"><span class="z-source"> charstrings</span><span class="z-keyword z-operator"> =</span><span class="z-source"> cff</span><span class="z-punctuation">.</span><span class="z-meta z-indexed-name z-python">cff</span><span class="z-punctuation">[</span><span class="z-constant z-numeric">0</span><span class="z-punctuation">].</span><span class="z-source">CharStrings</span></span> <span class="giallo-l"><span class="z-keyword z-control z-flow z-python"> else</span><span class="z-punctuation">:</span></span> <span class="giallo-l"><span class="z-keyword z-control z-flow z-python"> return</span><span class="z-constant z-language z-python"> False</span></span> <span class="giallo-l"></span> <span class="giallo-l"><span class="z-source"> hmtx</span><span class="z-keyword z-operator"> =</span><span class="z-meta z-indexed-name z-python"> font</span><span class="z-punctuation">[</span><span class="z-punctuation z-definition z-string">&#39;</span><span class="z-string">hmtx</span><span class="z-punctuation z-definition z-string">&#39;</span><span class="z-punctuation">]</span></span> <span class="giallo-l"><span class="z-source"> codes_to_remove</span><span class="z-keyword z-operator"> =</span><span class="z-punctuation"> []</span></span> <span class="giallo-l"></span> <span class="giallo-l"><span class="z-source"> space_code</span><span class="z-keyword z-operator"> =</span><span class="z-storage z-type"> 0x</span><span class="z-constant z-numeric">0020</span></span> <span class="giallo-l"><span class="z-source"> ideographic_space_code</span><span class="z-keyword z-operator"> =</span><span class="z-storage z-type"> 0x</span><span class="z-constant z-numeric">3000</span></span> <span class="giallo-l"></span> <span class="giallo-l"><span class="z-keyword z-control z-flow z-python"> for</span><span class="z-source"> unicode_code</span><span class="z-punctuation">,</span><span class="z-source"> glyph_name</span><span class="z-keyword z-control z-flow z-python"> in</span><span class="z-source"> original_cmap</span><span class="z-punctuation">.</span><span class="z-meta z-function-call z-python">items</span><span class="z-punctuation">():</span></span> <span class="giallo-l"><span class="z-keyword z-control z-flow z-python"> if</span><span class="z-source"> glyph_name</span><span class="z-keyword z-operator z-logical z-python"> in</span><span class="z-source"> hmtx</span><span class="z-punctuation">.</span><span class="z-source">metrics</span><span class="z-punctuation">:</span></span> <span class="giallo-l"><span class="z-source"> width</span><span class="z-punctuation">,</span><span class="z-source"> lsb</span><span class="z-keyword z-operator"> =</span><span class="z-source"> hmtx</span><span class="z-punctuation">.</span><span class="z-meta z-indexed-name z-python">metrics</span><span class="z-punctuation">[</span><span class="z-meta z-item-access z-python">glyph_name</span><span class="z-punctuation">]</span></span> <span class="giallo-l"><span class="z-keyword z-control z-flow z-python"> else</span><span class="z-punctuation">:</span></span> <span class="giallo-l"><span class="z-source"> width</span><span class="z-punctuation">,</span><span class="z-source"> lsb</span><span class="z-keyword z-operator"> =</span><span class="z-constant z-numeric"> 0</span><span class="z-punctuation">,</span><span class="z-constant z-numeric"> 0</span></span> <span class="giallo-l"></span> <span class="giallo-l"><span class="z-keyword z-control z-flow z-python"> if</span><span class="z-source"> glyph_name</span><span class="z-keyword z-operator z-logical z-python"> in</span><span class="z-source"> charstrings</span><span class="z-punctuation">:</span></span> <span class="giallo-l"><span class="z-source"> charstring</span><span class="z-keyword z-operator"> =</span><span class="z-meta z-indexed-name z-python"> charstrings</span><span class="z-punctuation">[</span><span class="z-meta z-item-access z-python">glyph_name</span><span class="z-punctuation">]</span></span> <span class="giallo-l"></span> <span class="giallo-l"><span class="z-source"> pen</span><span class="z-keyword z-operator"> =</span><span class="z-meta z-function-call z-python"> RecordingPen</span><span class="z-punctuation">()</span></span> <span class="giallo-l"><span class="z-keyword z-control z-flow z-python"> try</span><span class="z-punctuation">:</span></span> <span class="giallo-l"><span class="z-source"> charstring</span><span class="z-punctuation">.</span><span class="z-meta z-function-call z-python">draw</span><span class="z-punctuation">(</span><span class="z-meta z-function-call z-arguments z-python">pen</span><span class="z-punctuation">)</span></span> <span class="giallo-l"><span class="z-source"> commands</span><span class="z-keyword z-operator"> =</span><span class="z-source"> pen</span><span class="z-punctuation">.</span><span class="z-source">value</span></span> <span class="giallo-l"><span class="z-source"> has_drawing</span><span class="z-keyword z-operator"> =</span><span class="z-support z-function z-builtin z-python"> len</span><span class="z-punctuation">(</span><span class="z-meta z-function-call z-arguments z-python">commands</span><span class="z-punctuation">)</span><span class="z-keyword z-operator"> &gt;</span><span class="z-constant z-numeric"> 0</span></span> <span class="giallo-l"><span class="z-keyword z-control z-flow z-python"> except</span><span class="z-support z-type z-exception z-python"> Exception</span><span class="z-punctuation">:</span></span> <span class="giallo-l"><span class="z-source"> has_drawing</span><span class="z-keyword z-operator"> =</span><span class="z-constant z-language z-python"> False</span></span> <span class="giallo-l"></span> <span class="giallo-l"><span class="z-punctuation z-definition z-comment z-comment"> # スペース文字以外で描画データがない場合は削除対象</span></span> <span class="giallo-l"><span class="z-keyword z-control z-flow z-python"> if</span><span class="z-source"> unicode_code</span><span class="z-keyword z-operator z-logical z-python"> not in</span><span class="z-punctuation"> [</span><span class="z-source">space_code</span><span class="z-punctuation">,</span><span class="z-source"> ideographic_space_code</span><span class="z-punctuation">]:</span></span> <span class="giallo-l"><span class="z-keyword z-control z-flow z-python z-keyword z-operator z-logical z-python"> if not</span><span class="z-source"> has_drawing</span><span class="z-keyword z-operator z-logical z-python"> and</span><span class="z-source"> width</span><span class="z-keyword z-operator"> &gt;</span><span class="z-constant z-numeric"> 0</span><span class="z-punctuation">:</span></span> <span class="giallo-l"><span class="z-source"> codes_to_remove</span><span class="z-punctuation">.</span><span class="z-meta z-function-call z-python">append</span><span class="z-punctuation">(</span><span class="z-meta z-function-call z-arguments z-python">unicode_code</span><span class="z-punctuation">)</span></span> <span class="giallo-l"></span> <span class="giallo-l"><span class="z-punctuation z-definition z-comment z-comment"> # cmapテーブルから削除</span></span> <span class="giallo-l"><span class="z-keyword z-control z-flow z-python"> for</span><span class="z-source"> table</span><span class="z-keyword z-control z-flow z-python"> in</span><span class="z-meta z-indexed-name z-python"> font</span><span class="z-punctuation">[</span><span class="z-punctuation z-definition z-string">&#39;</span><span class="z-string">cmap</span><span class="z-punctuation z-definition z-string">&#39;</span><span class="z-punctuation">].</span><span class="z-source">tables</span><span class="z-punctuation">:</span></span> <span class="giallo-l"><span class="z-keyword z-control z-flow z-python"> if</span><span class="z-support z-function z-builtin z-python"> hasattr</span><span class="z-punctuation">(</span><span class="z-meta z-function-call z-arguments z-python">table</span><span class="z-punctuation">,</span><span class="z-punctuation z-definition z-string z-string"> &#39;cmap&#39;</span><span class="z-punctuation">):</span></span> <span class="giallo-l"><span class="z-keyword z-control z-flow z-python"> for</span><span class="z-source"> code</span><span class="z-keyword z-control z-flow z-python"> in</span><span class="z-source"> codes_to_remove</span><span class="z-punctuation">:</span></span> <span class="giallo-l"><span class="z-keyword z-control z-flow z-python"> if</span><span class="z-source"> code</span><span class="z-keyword z-operator z-logical z-python"> in</span><span class="z-source"> table</span><span class="z-punctuation">.</span><span class="z-source">cmap</span><span class="z-punctuation">:</span></span> <span class="giallo-l"><span class="z-keyword z-control z-flow z-python"> del</span><span class="z-source"> table</span><span class="z-punctuation">.</span><span class="z-meta z-indexed-name z-python">cmap</span><span class="z-punctuation">[</span><span class="z-meta z-item-access z-python">code</span><span class="z-punctuation">]</span></span> <span class="giallo-l"></span> <span class="giallo-l"><span class="z-source"> font</span><span class="z-punctuation">.</span><span class="z-meta z-function-call z-python">save</span><span class="z-punctuation">(</span><span class="z-meta z-function-call z-arguments z-python">output_path</span><span class="z-punctuation">)</span></span> <span class="giallo-l"><span class="z-keyword z-control z-flow z-python"> return</span><span class="z-constant z-language z-python"> True</span><span class="z-punctuation">,</span><span class="z-support z-function z-builtin z-python"> len</span><span class="z-punctuation">(</span><span class="z-meta z-function-call z-arguments z-python">codes_to_remove</span><span class="z-punctuation">)</span></span></code></pre><h2 id="修正結果">修正結果</h2> <p>修正結果は次の通りです。</p> <ul> <li>総cmapエントリ数: 10,161 → 5,762個（削減率: 43.3%）</li> <li>削除されたエントリ: 4,399個</li> <li>Adobe Japan 1-4拡張範囲: 408個</li> <li>その他の範囲: 3,991個</li> <li>ファイルサイズ: 2.6% 削減</li> </ul> <p>修正の結果、 今のところターミナルでも問題なく使用できています。</p> <p>上記のスクリプトは精緻にテストを行なっていませんので、 利用については自己責任でどうぞ。</p> フォント編集ソフト「OTEdit」で作成されたフォントの空グリフ問題について解説。Adobe-Japan1文字集合選択時に発生する空グリフによりフォールバック機能が正常に動作しない問題と、Pythonスクリプトを使った修正方法を紹介。 中村書体室のフォント「カドマ-R」を購入 2025-09-15T00:00:00+00:00 2025-09-15T00:00:00+00:00 Toshiyuki Yoshida https://codedchords.dev/blog/2025/09/kadoma-r/ <!-- textlint-disable --> <img src="https:&#x2F;&#x2F;codedchords.dev&#x2F;blog&#x2F;2025&#x2F;09&#x2F;kadoma-r&#x2F;kadoma-r.webp?h=fb6e8733ae3835468f5e" alt="カドマ-R" width="754" height="357" loading="lazy" /><!-- textlint-enable --> <p>ターミナル用に<a rel="external" href="https://www.n-font.com/">中村書体室</a>の「<a rel="external" href="https://www.n-font.com/fonts/kadomar">カドマ-R</a>」 を購入しました。</p> <p>文字のマス目一杯にデザインされていますが、コーナーには限りなく柔らかな丸みがつけてあります。 スクエアなのに丸みや柔らかさを感じるという、 従来の丸ゴシック体や角ゴシック体とも違う独特な印象があり大変気に入っています。</p> <p>ターミナルで愛用していますが、 半角文字は大きさを合わせてデザインされているようで英単語などを多用すると読みづらいので、 半角文字は<code>Berkeley Mono</code> を表示するようにしています。</p> <p>あまりに気に入ったので、このサイトにも使用させていただいています。<sup class="footnote-reference" id="fr-1-1"><a href="#fn-1">1</a></sup> <sup class="footnote-reference" id="fr-2-1"><a href="#fn-2">2</a></sup></p> <p>また、購入後に書体の追加とOTFへの移行を快く対応いただき、 書体デザイナーの中村征宏様には大変感謝しています。</p> <section class="footnotes"> <ol class="footnotes-list"> <li id="fn-1"> <p>フォントの変換とサイトでの使用については、中村書体室に同意をいただいています。 <a href="#fr-1-1">↩</a></p> </li> <li id="fn-2"> <p>2026年よりブログのプラットフォームを移行したので、WEBフォントは外しています。 <a href="#fr-2-1">↩</a></p> </li> </ol> </section> 中村書体室の「カドマ-R」を購入しました。スクエアなのに丸みや柔らかさを感じる独特な印象のフォントで、ターミナルにぜひ使用したいと思いました。Berkeley Monoと組み合わせて使用しています。 中村書体室の新フォント「コントラ体」 2025-07-15T00:00:00+00:00 2025-07-15T00:00:00+00:00 Toshiyuki Yoshida https://codedchords.dev/blog/2025/07/kontora-font/ <!-- textlint-disable --> <img src="https:&#x2F;&#x2F;codedchords.dev&#x2F;blog&#x2F;2025&#x2F;07&#x2F;kontora-font&#x2F;kontora.svg?h=ff5d7b2ff95cc33e2599" alt="コントラ体" width="923" height="320" loading="lazy" /><!-- textlint-enable --> <p><a rel="external" href="https://www.n-font.com/">中村書体室</a>から新フォント「コントラ体」がリリースされたので、早速購入しました。</p> <p>このフォントは直線を基調としながらも、太い線と細い線が一見不規則に配置されています。この大胆な太細の差が、まさにフォント名の由来となった「コントラスト」を生み出しています。遊び心がありながらも、どこか書道を思わせる味わい深さを併せ持つ、実にユニークなフォントです。</p> <p>高いデザイン性ゆえに本文での使用には向きませんが、動画のタイトルやポスターの見出しなど、インパクトを求める場面では効果的に使えそうです。</p> <p>制作者の中村征宏氏は、「ゴナ」や「ナール」といった名作書体を手がけた巨匠です。80歳を超えてなお精力的に新作を発表し続ける姿勢には、本当に頭が下がります。</p> <p>購入後にいただいた発送連絡メールには、以下のような心温まるメッセージが添えられていました。</p> <blockquote> <p>もし不足文字が出た時はご通知ください。2〜3日で文字追加ファイルをメール添付にて送信いたします。フォントに不備がありましたらご連絡をお願いします。</p> </blockquote> <p>こうした細やかな配慮からも、長年にわたって日本の文字文化を支えてこられた職人魂を感じます。</p> 中村書体室から新しくリリースされた「コントラ体」を購入しました。直線基調でありながら太細の線が独特のコントラストを生み出す、遊び心と書道の味わいを併せ持つユニークなフォントです。80歳を超えてなお精力的に活動される中村征宏氏の職人魂に触れます。