Merge 1f13a1f04f693f22de96a8905a5e0412aa0bc6b8 into 5dc31ac51b08f910a2de1596b37a6a3dddd5e7b7

README.md

@@ -207,7 +207,7 @@ If you're running a system without prepackaged binary available, which means you
   - [bass](https://github.com/edc/bass) allows you to use utilities written for Bash in fish shell
   - [fast-nvm-fish](https://github.com/brigand/fast-nvm-fish) only works with version numbers (not aliases) but doesn't significantly slow your shell startup
   - [plugin-nvm](https://github.com/derekstavis/plugin-nvm) plugin for [Oh My Fish](https://github.com/oh-my-fish/oh-my-fish), which makes nvm and its completions available in fish shell
-  - [fnm](https://github.com/fisherman/fnm) - [fisherman](https://github.com/fisherman/fisherman)-based version manager for fish
+  - [nvm.fish](https://github.com/jorgebucaran/nvm.fish) - Node.js version manager lovingly made for Fish
   - [fish-nvm](https://github.com/FabioAntunes/fish-nvm) - Wrapper around nvm for fish, delays sourcing nvm until it's actually used.
 
 **Note:** We still have some problems with FreeBSD, because there is no official pre-built binary for FreeBSD, and building from source may need [patches](https://www.freshports.org/www/node/files/patch-deps_v8_src_base_platform_platform-posix.cc); see the issue ticket:

nvm.sh

@@ -700,10 +700,12 @@ nvm_ensure_version_installed() {
       nvm_err "N/A: version \"${PREFIXED_VERSION:-$PROVIDED_VERSION}\" is not yet installed."
     fi
     nvm_err ""
-    if [ "${IS_VERSION_FROM_NVMRC}" != '1' ]; then
+    if [ "${PROVIDED_VERSION}" = 'lts' ]; then
-        nvm_err "You need to run \`nvm install ${PROVIDED_VERSION}\` to install and use it."
+      nvm_err '`lts` is not an alias - you may need to run `nvm install --lts` to install and `nvm use --lts` to use it.'
-      else
+    elif [ "${IS_VERSION_FROM_NVMRC}" != '1' ]; then
-        nvm_err 'You need to run `nvm install` to install and use the node version specified in `.nvmrc`.'
+      nvm_err "You need to run \`nvm install ${PROVIDED_VERSION}\` to install and use it."
+    else
+      nvm_err 'You need to run `nvm install` to install and use the node version specified in `.nvmrc`.'
     fi
     return 1
   fi

test/slow/nvm use/Running 'nvm use lts' shows actionable error

@@ -0,0 +1,19 @@
+#!/bin/sh
+
+set -ex
+
+die () { echo "$@" ; exit 1; }
+
+\. ../../../nvm.sh
+
+# Deactivate any active node version
+nvm deactivate >/dev/null 2>&1 || die 'deactivate failed'
+
+# Attempt to use 'lts' without '--' and capture the error message
+ERROR_OUTPUT=$(nvm use lts 2>&1) || true
+
+EXPECTED_ERROR='`lts` is not an alias - you may need to run `nvm install --lts` to install and `nvm use --lts` to use it.'
+
+# Check if the error message matches the expected output
+echo "$ERROR_OUTPUT" | grep -q "$EXPECTED_ERROR" \
+  || die "Expected error message not found. Got: $ERROR_OUTPUT"