開発ツール・SaaS Stack Exchange · 2026-05-16

Git は空白の変更も行全体の置換にする：空白とコメントを除いて比較したい

Git counts a whitespace tweak as a whole new line: want diffs that strip whitespace and comments first

30秒でわかる要約

誰がStack Exchange · 2026-05-16 · 2 返信
何を求めているかGit は空白の変更も行全体の置換にする：空白とコメントを除いて比較したい
何を作れるかA semantic diff layer: strip whitespace/comments, normalize, then highlight real changes — shipped as a GitHub App plus CLI, subscription.

元スレッドの発言

“I don't want a whitespace change to replace the whole line, and commenting a line shouldn't count as a rewrite either — so I can track the code that actually stayed the same.”
— Stack Exchange · 2026-05-16 · softwarerecs.stackexchange.com/questions/95393/alter…

背景と課題

痛みのポイント

整形とコメントの ON/OFF が diff 歴を汚染し、本当の論理変更が埋もれて blame もレビューも機能しなくなります。

プロダクトの切り口

何を作れるか

A semantic diff layer: strip whitespace/comments, normalize, then highlight real changes — shipped as a GitHub App plus CLI, subscription.

検証のしかた

スレッドの返信をすべて読み、繰り返し出てくる具体的な場面を書き出します。繰り返しこそ需要の密度です。
「git / code review」関連の既存ツールを調べ、どの一部分しかカバーしていないかを確認します。
一言ランディングページを作り、Stack Exchange に投稿して価格を聞く人が現れるか見ます。

既存の選択肢

git diff --ignore-whitespace语义 diff 学术工具

スレッドの声 · 人気コメント

人気コメントは機械翻訳です。原文は元スレッドで確認できます。

a line into comments wouldn't replace the whole line either. This way I could be able to keep track of code that remains the same for a longer period of time. Dude, if you comment out a line, the functionality of your code changed. You need to understand that. I can see your point on whitespace, and you can 1) configure git to use Beyond Compare as its diff tool and 2) configure Beyond Compare to ignore whitespace changes. Quite how this fits in with "keep track of code that remains the same for a longer period of time" is questionable. Do you pull two branches form different time lines and di

— Mawg · ▲ 0

Just for giggles, I fed ChatGPT your question and asked if there was any way to do it with git. Here's what it said ... What Git already supports Ignore whitespace changes in diffs Git can suppress whitespace-only changes during comparison: git diff -w git blame -w or: git diff --ignore-space-change This helps review history without noise. Ignore formatting commits in blame A common modern workflow: Run a formatter (black, prettier, clang-format) Put that commit hash into: .git-blame-ignore-revs Then: git config blame.ignoreRevsFile .git-blame-ignore-revs Now git blame skips formatting-only co

— Mawg · ▲ 0

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