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Pin the theme name check to C, and read a colon before any slash as scp-style

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A bracket range is collated, not ASCII, so `[a-z]` admits `é` under
en_US.UTF-8 and refuses it under C: the same theme URL installed on one
desktop and was refused on the next, and the manual's stated set was only
true in the C locale. Pinning the comparison makes the written set the
shipped one everywhere.

git reads a URL as scp-style when a colon appears before any slash, so the
path after it need not contain one. Requiring a slash left the prefix on
`git@host:omarchy-blue-theme.git` and derived the name
`git@host:omarchy-blue`, which the allowlist then refuses -- a repo that
clones fine could no longer be installed at all.

Co-Authored-By: Codex XHigh <codex@openai.com>
This commit is contained in:
David Heinemeier Hansson
2026-08-27 19:52:37 +02:00
co-authored by Codex XHigh
parent 3b0e899029
commit 2b923cf5bd
2 changed files with 42 additions and 3 deletions
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bin/omarchy-theme-install
+8 -3
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@@ -23,9 +23,12 @@ omarchy-git-url-check "$REPO_URL" || exit 1
THEMES_DIR="$HOME/.config/omarchy/themes"
# Strip user@host: prefix from scp-style SSH URLs so basename sees just the path
# Strip user@host: prefix from scp-style SSH URLs so basename sees just the path.
# git reads a URL as scp-style when a colon appears before any slash, so the path
# after it need not hold one: `git@host:omarchy-blue-theme.git` is a repo in that
# user's home, and leaving its prefix on names the theme after the whole URL.
REPO_PATH="$REPO_URL"
[[ $REPO_PATH != *"://"* && $REPO_PATH == *:*/* ]] && REPO_PATH="${REPO_PATH#*:}"
[[ $REPO_PATH != *"://"* && $REPO_PATH == *:* && ${REPO_PATH%%:*} != */* ]] && REPO_PATH="${REPO_PATH#*:}"
THEME_NAME=$(basename -- "$REPO_PATH" .git | sed -E 's/^omarchy-//; s/-theme$//' | tr '[:upper:]' '[:lower:]')
THEME_PATH="$THEMES_DIR/$THEME_NAME"
@@ -37,7 +40,9 @@ THEME_PATH="$THEMES_DIR/$THEME_NAME"
# ~/.config/omarchy with it, and one called `a';'id` would carry its own
# command into that picker. The leading character is kept out of `.` and `-`,
# which also covers `host:-s/foo.git` leaving basename with `.git`.
if [[ ! $THEME_NAME =~ ^[a-z0-9_][a-z0-9._+-]*$ ]]; then
# A bracket range follows the locale's collation, not ASCII: `[a-z]` takes in
# `é` under en_US.UTF-8. Pin the locale so the set is the one written here.
if ! (LC_ALL=C; [[ $THEME_NAME =~ ^[a-z0-9_][a-z0-9._+-]*$ ]]); then
echo "Error: '$REPO_URL' does not give a usable theme name."
exit 1
fi