[New] add `lts/-1` etc, to point to an LTS line relative to "latest"
diff --git a/nvm.sh b/nvm.sh
index 8bb36f7..96c662f 100644
--- a/nvm.sh
+++ b/nvm.sh
@@ -855,8 +855,25 @@
return 1
fi
+ local NVM_ALIAS_DIR
+ NVM_ALIAS_DIR="$(nvm_alias_path)"
+
+ if [ "$(expr "${ALIAS}" : '^lts/-[1-9][0-9]*$')" -gt 0 ]; then
+ local N
+ N="$(echo "${ALIAS}" | cut -d '-' -f 2)"
+ local RESULT
+ RESULT="$(command ls "${NVM_ALIAS_DIR}/lts" | command tail -n "${N}" | command head -n 1)"
+ if [ "${RESULT}" != '*' ]; then
+ nvm_alias "lts/${RESULT}"
+ return $?
+ else
+ nvm_err 'That many LTS releases do not exist yet.'
+ return 2
+ fi
+ fi
+
local NVM_ALIAS_PATH
- NVM_ALIAS_PATH="$(nvm_alias_path)/${ALIAS}"
+ NVM_ALIAS_PATH="${NVM_ALIAS_DIR}/${ALIAS}"
if [ ! -f "${NVM_ALIAS_PATH}" ]; then
nvm_err 'Alias does not exist.'
return 2
diff --git a/test/fast/Unit tests/mocks/LTS_names.txt b/test/fast/Unit tests/mocks/LTS_names.txt
new file mode 100644
index 0000000..b814a02
--- /dev/null
+++ b/test/fast/Unit tests/mocks/LTS_names.txt
@@ -0,0 +1,5 @@
+erbium
+dubnium
+carbon
+boron
+argon
diff --git a/test/fast/Unit tests/nvm_alias LTS-N b/test/fast/Unit tests/nvm_alias LTS-N
new file mode 100755
index 0000000..352644a
--- /dev/null
+++ b/test/fast/Unit tests/nvm_alias LTS-N
@@ -0,0 +1,34 @@
+#!/bin/sh
+
+die () { echo "$@" ; cleanup ; exit 1; }
+
+
+cleanup() {
+ unset -f nvm_download
+}
+
+\. ../../../nvm.sh
+
+set -ex
+
+MOCKS_DIR="${PWD}/mocks"
+
+# sample output at the time the test was written
+TAB_PATH="${MOCKS_DIR}/nodejs.org-dist-index.tab"
+nvm_download() {
+ cat "${TAB_PATH}"
+}
+
+nvm_ls_remote >/dev/null || die "nvm_ls_remote_failed?!"
+
+LTS_NAMES_PATH="${MOCKS_DIR}/LTS_names.txt"
+
+N=0
+while IFS= read -r LTS; do
+ N=$(($N+1))
+ EXPECTED="$(nvm_alias "lts/${LTS}")"
+ ACTUAL="$(nvm_alias "lts/-${N}")"
+ [ "${EXPECTED}" = "${ACTUAL}" ] || die "\`nvm_alias lts/-${N}\` was \`${ACTUAL}\`; expected \`${EXPECTED}\`"
+done < "${LTS_NAMES_PATH}"
+
+cleanup
diff --git a/update_test_mocks.sh b/update_test_mocks.sh
index 28458ea..30a3782 100755
--- a/update_test_mocks.sh
+++ b/update_test_mocks.sh
@@ -44,9 +44,14 @@
ALIAS_PATH="$MOCKS_DIR/nvm_make_alias LTS alias calls.txt"
: > "$ALIAS_PATH"
+LTS_NAMES_PATH="$MOCKS_DIR/LTS_names.txt"
+: > "$LTS_NAMES_PATH"
nvm_make_alias() {
# prevent local alias creation, and store arguments
echo "${1}|${2}" >> "$ALIAS_PATH"
+ if [ "${1}" != 'lts/*' ]; then
+ echo "${1#lts/}" >> "$LTS_NAMES_PATH"
+ fi
}
nvm ls-remote --lts > /dev/null
