diff --git a/fish/conf.d/nvm.fish b/fish/conf.d/nvm.fish
index a82c8bd..347c2bd 100644
--- a/fish/conf.d/nvm.fish
+++ b/fish/conf.d/nvm.fish
@@ -4,7 +4,7 @@ function _nvm_install --on-event nvm_install
     set --query nvm_mirror || set --universal nvm_mirror https://nodejs.org/dist
 
     test ! -d $nvm_data && command mkdir -p $nvm_data
-    echo "Downloading the Node distribution index for the first time..." 2>/dev/null
+    echo "Downloading the Node distribution index..." 2>/dev/null
     _nvm_index_update $nvm_mirror $nvm_data/.index
 end
 
@@ -23,6 +23,6 @@ function _nvm_uninstall --on-event nvm_uninstall
     functions --erase (functions --all | string match --entire --regex -- "^_nvm_")
 end
 
-status is-interactive &&
-    set --query nvm_default_version && ! set --query nvm_current_version &&
+if status is-interactive && set --query nvm_default_version && ! set --query nvm_current_version
     nvm use $nvm_default_version >/dev/null
+end
diff --git a/fish/functions/_nvm_index_update.fish b/fish/functions/_nvm_index_update.fish
index 9bdd18a..0ba3305 100644
--- a/fish/functions/_nvm_index_update.fish
+++ b/fish/functions/_nvm_index_update.fish
@@ -1,12 +1,16 @@
 function _nvm_index_update --argument-names mirror index
-    command curl --location --silent $mirror/index.tab | command awk -v OFS=\t '
+    if not command curl --location --silent $mirror/index.tab >$index.temp
+        command rm -f $index.temp
+        echo "nvm: Can't update index, host unavailable: \"$mirror\"" >&2
+        return 1
+    end
+
+    command awk -v OFS=\t '
         /v0.9.12/ { exit } # Unsupported
         NR > 1 {
             print $1 (NR == 2  ? " latest" : $10 != "-" ? " lts/" tolower($10) : "")
         }
-    ' >$index.temp 2>/dev/null && command mv $index.temp $index && return
+    ' $index.temp >$index
 
     command rm -f $index.temp
-    echo "nvm: Invalid index or unavailable host: \"$mirror\"" >&2
-    return 1
 end
diff --git a/fish/functions/fisher.fish b/fish/functions/fisher.fish
index a1fb6cf..6407479 100644
--- a/fish/functions/fisher.fish
+++ b/fish/functions/fisher.fish
@@ -1,6 +1,6 @@
 function fisher --argument-names cmd --description "A plugin manager for Fish"
     set --query fisher_path || set --local fisher_path $__fish_config_dir
-    set --local fisher_version 4.3.0
+    set --local fisher_version 4.3.1
     set --local fish_plugins $__fish_config_dir/fish_plugins
 
     switch "$cmd"
@@ -15,6 +15,8 @@ function fisher --argument-names cmd --description "A plugin manager for Fish"
             echo "Options:"
             echo "       -v or --version  Print version"
             echo "       -h or --help     Print this help message"
+            echo "Variables:"
+            echo "       \$fisher_path  Plugin installation path. Default: ~/.config/fish"
         case ls list
             string match --entire --regex -- "$argv[2]" $_fisher_plugins
         case install update remove
@@ -82,11 +84,12 @@ function fisher --argument-names cmd --description "A plugin manager for Fish"
                     else
                         set temp (command mktemp -d)
                         set name (string split \@ $plugin) || set name[2] HEAD
-                        set url https://codeload.github.com/\$name[1]/tar.gz/\$name[2]
+                        set url https://api.github.com/repos/\$name[1]/tarball/\$name[2]
+                        set header 'Accept: application/vnd.github.v3+json'
 
                         echo Fetching (set_color --underline)\$url(set_color normal)
 
-                        if curl --silent \$url | tar -xzC \$temp -f - 2>/dev/null
+                        if curl --silent -L -H \$header \$url | tar -xzC \$temp -f - 2>/dev/null
                             command cp -Rf \$temp/*/* $source
                         else
                             echo fisher: Invalid plugin name or host unavailable: \\\"$plugin\\\" >&2
diff --git a/fish/functions/nvm.fish b/fish/functions/nvm.fish
index ee54cf0..77ec62e 100644
--- a/fish/functions/nvm.fish
+++ b/fish/functions/nvm.fish
@@ -9,9 +9,11 @@ function nvm --argument-names cmd v --description "Node version manager"
         end
     end
 
+    set --local their_version $v
+
     switch "$cmd"
         case -v --version
-            echo "nvm, version 2.2.5"
+            echo "nvm, version 2.2.7"
         case "" -h --help
             echo "Usage: nvm install <version>    Download and activate the specified Node version"
             echo "       nvm install              Install version from nearest .nvmrc file"
@@ -35,7 +37,7 @@ function nvm --argument-names cmd v --description "Node version manager"
             string match --entire --regex -- (_nvm_version_match $v) <$nvm_data/.index | read v alias
 
             if ! set --query v[1]
-                echo "nvm: Invalid version number or alias: \"$argv[2..-1]\"" >&2
+                echo "nvm: Invalid version number or alias: \"$their_version\"" >&2
                 return 1
             end
 
@@ -114,7 +116,7 @@ function nvm --argument-names cmd v --description "Node version manager"
             _nvm_list | string match --entire --regex -- (_nvm_version_match $v) | read v __
 
             if ! set --query v[1]
-                echo "nvm: Node version not installed or invalid: \"$argv[2..-1]\"" >&2
+                echo "nvm: Can't use Node \"$their_version\", version must be installed first" >&2
                 return 1
             end
 
@@ -135,7 +137,7 @@ function nvm --argument-names cmd v --description "Node version manager"
             _nvm_list | string match --entire --regex -- (_nvm_version_match $v) | read v __
 
             if ! set -q v[1]
-                echo "nvm: Node version not installed or invalid: \"$argv[2..-1]\"" >&2
+                echo "nvm: Node version not installed or invalid: \"$their_version\"" >&2
                 return 1
             end