diff --git a/.editorconfig b/.editorconfig
index 0009889..4110381 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -1,5 +1,12 @@
+root = true
+
 [*]
+charset = utf-8
+end_of_line = lf
 indent_style = space
-indent_size = 2
+indent_size = 4
 trim_trailing_whitespace = true
 insert_final_newline = true
+
+[*.md]
+trim_trailing_whitespace = false
diff --git a/.travis.yml b/.travis.yml
index baadae1..4db3e3d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -47,4 +47,5 @@ script:
   - ruby test/completion.rb
   - fish test/wrapper.fish
   - fish test/reinitialize.fish
-  - bash -c "sdk install crash 1.3.0; sdk uninstall crash 1.3.0"; fish test/10_zombies_new.fish
+  - bash -c "source ${HOME}/.sdkman/bin/sdkman-init.sh && sdk install crash 1.3.0 && sdk uninstall crash 1.3.0" && fish test/10_zombies_new.fish
+  - bash -c "rm -rf ~/.sdkman &&  sed -i 's/^.*\(sdkman\|SDKMAN\).*$//g' ~/.bashrc && echo 'SDKMAN uninstalled'" && fish -c "echo 'y' | sdk" && fish -c "sdk version"
diff --git a/README.md b/README.md
index c59d15b..c5ace6f 100644
--- a/README.md
+++ b/README.md
@@ -2,8 +2,8 @@
 
 [![Build Status][travis-badge]][travis-link]
 
-Makes command `sdk` from [SDKMAN!] available in fish.
-Also provides auto-completion and adds binaries from installed SDKs to the PATH.
+Makes command `sdk` from [SDKMAN!] usable from fish, including auto-completion.
+Also adds binaries from installed SDKs to the PATH.
 
 Tested with fish 2.7.1 and 3.0.2, and SDKMAN! 5.7.3.
 
@@ -15,7 +15,10 @@ With [fisher] (install separately):
 fisher add reitzig/sdkman-for-fish
 ```
 
-_Note:_ Only compatible with fisher v3 upwards; v2 is no longer supported.
+_Note:_ 
+
+ - Only compatible with fisher v3 upwards; v2 is no longer supported.
+ - You have to install [SDKMAN!] separately.
 
 ## Usage
 
diff --git a/conf.d/sdk.fish b/conf.d/sdk.fish
index d8b9a37..ad7f981 100644
--- a/conf.d/sdk.fish
+++ b/conf.d/sdk.fish
@@ -18,8 +18,8 @@ end
 # Hack for issue #19:
 # Create version of sdkman-init that doesn't export any environment variables.
 # Refresh if sdkman-init changed.
-if  begin    not test -f "$__fish_sdkman_noexport_init";
-          or     env test "$__fish_sdkman_init" -nt "$__fish_sdkman_noexport_init"
+if  begin       not test -f "$__fish_sdkman_noexport_init";
+          or    env test "$__fish_sdkman_init" -nt "$__fish_sdkman_noexport_init"
     end
     mkdir -p (dirname $__fish_sdkman_noexport_init)
     sed -e 's/^\(\s*\).*\(export\|to_path\).*$/\1:/g' "$__fish_sdkman_init" \
@@ -78,6 +78,7 @@ end
 # no initialization necessary.
 # Otherwise:
 if not set -q SDKMAN_DIR; or test (ls -ld "$SDKMAN_DIR" | awk '{print $3}') != (whoami)
+    set -e SDKMAN_DIR
     __fish_sdkman_run_in_bash "source $__fish_sdkman_init"
 end
 
diff --git a/functions/sdk.fish b/functions/sdk.fish
index 8a5dd8d..1bc2a16 100644
--- a/functions/sdk.fish
+++ b/functions/sdk.fish
@@ -1,9 +1,36 @@
-# Guard: SDKMAN! needs to be installed
-if not test -f "$__fish_sdkman_init"
-  exit 0
-end
-
-# Declare the sdk command for fish
 function sdk -d "Manage SDKs"
-    __fish_sdkman_run_in_bash "source \"$__fish_sdkman_noexport_init\" && sdk $argv"
+    # Guard: SDKMAN! needs to be installed
+    if not test -f "$__fish_sdkman_init"
+        # Propose to install SDKMAN!
+
+        function read_confirm
+            while true
+                read -l -P "$argv[1] [y/N] " confirm
+
+                switch $confirm
+                case Y y
+                    return 0
+                case '' N n
+                    return 1
+                end
+            end
+        end
+
+        if read_confirm "You don't seem to have SDKMAN! installed. Install now?"
+            if not which curl > /dev/null
+                echo "curl required"
+                return 1
+            end
+            if not which bash > /dev/null
+                echo "bash required"
+                return 1
+            end
+
+            curl -s "https://get.sdkman.io" | bash | sed '/All done!/q'
+            echo "Please open a new terminal/shell to load SDKMAN!"
+        end
+    else
+        # Declare the _actual_ sdk command for fish
+        __fish_sdkman_run_in_bash "source \"$__fish_sdkman_noexport_init\" && sdk $argv"
+    end
 end
diff --git a/test/reinitialize.fish b/test/reinitialize.fish
index 23cb921..564e74b 100755
--- a/test/reinitialize.fish
+++ b/test/reinitialize.fish
@@ -16,10 +16,12 @@ begin
 end
 
 begin
-    set SDKMAN_DIR "/" # belongs to root, who hopefully doesn't run this
+    set -x SDKMAN_DIR "/" # belongs to root, who hopefully doesn't run this
     set in_new_shell (fish -lc 'echo $SDKMAN_DIR')
     if [ "$in_new_shell" != "$proper_value" ]
       echo "SDKMAN_DIR reinitialized to $in_new_shell instead of $proper_value"
       exit 1
     end
 end
+
+# TODO: add test that fails if `test` in conf.d/sdk.fish:80 errors (cf issue #28 et al.)