feat: zsh support — port hub/account-for-org + test/CI under zsh

.github/workflows/ci-unittest.yml

@@ -5,14 +5,22 @@ on: [push, pull_request]
 jobs:
   test:
     runs-on: ${{ matrix.os }}
+    name: ${{ matrix.os }} / ${{ matrix.shell }}
     strategy:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, macos-latest]
+        # bash is the historical target; zsh is the macOS default login shell.
+        # Utilities run under zsh's ksh emulation (provided by xsh).
+        shell: [bash, zsh]
 
     steps:
     - uses: actions/checkout@v4
 
+    - name: Install zsh (Linux)
+      if: matrix.shell == 'zsh' && runner.os == 'Linux'
+      run: sudo apt-get update && sudo apt-get install -y zsh
+
     - name: Install xsh
       run: |
         git clone --depth=50 https://github.com/alexzhangs/xsh.git xsh-source
@@ -30,10 +38,13 @@ jobs:
         BRANCH="${GITHUB_HEAD_REF:-${GITHUB_REF_NAME}}"
         xsh load -b "$BRANCH" xsh-lib/git || xsh load xsh-lib/git
 
-    - name: Run tests
+    - name: Run tests (${{ matrix.shell }})
       run: |
         # shellcheck disable=SC1090
         source ~/.xshrc
         xsh version
         xsh list
-        bash test.sh
+        # test.sh self-sources ~/.xshrc, so running it under the matrix shell
+        # makes the utilities execute under that shell (bash, or zsh's ksh
+        # emulation).
+        ${{ matrix.shell }} test.sh

README.md

@@ -23,6 +23,9 @@ Tested with bash:
 * 5.x and 4.x on Linux (ubuntu-latest in CI)
 * 3.2.57 on macOS (macos-latest in CI)
 
+The utilities also run under **zsh** (the default shell on modern macOS); xsh
+executes them under zsh's ksh emulation. Tested with zsh 5.x.
+
 This project is still at version `0.x` and should be considered immature.
 
 

functions/hub/account-for-org.sh

@@ -35,8 +35,11 @@ function account-for-org () {
     for record in $XSH_GIT_HUB_ACCOUNTS; do
         IFS=':' read -r r_account _ r_orgs_csv <<< "$record"
         [[ -z $r_orgs_csv ]] && continue
-        IFS=',' read -ra r_orgs <<< "$r_orgs_csv"
-        for o in "${r_orgs[@]}"; do
+        # split the CSV on comma. `read -a` is bash-only (zsh's read has no -a,
+        # and -A differs); org names never contain spaces, so replacing commas
+        # with spaces and word-splitting is portable across bash and zsh.
+        # shellcheck disable=SC2086
+        for o in ${r_orgs_csv//,/ }; do
             if [[ $o == "$org" ]]; then
                 printf '%s\n' "$r_account"
                 return 0

test.sh

@@ -15,6 +15,15 @@
 # unless XSH_GIT_TEST_NETWORK=1 is set explicitly.
 #
 
+# Make the `xsh` function available when run as a child process. Under bash it
+# is inherited as an exported function (no-op here); zsh cannot export functions,
+# so a child `zsh test.sh` sources ~/.xshrc to define xsh as a real zsh function
+# (otherwise it would only see the bin/xsh shim, which runs bash).
+if ! type xsh 2>/dev/null | grep -q 'function'; then
+    # shellcheck source=/dev/null
+    . ~/.xshrc
+fi
+
 set -e -o pipefail
 
 # xsh's __xsh_clean unsets XSH_DEV on every RETURN trap, so a script that makes