diff --git a/emacs-bookmark.zsh b/emacs-bookmark.zsh
index 81027f5..c095fff 100644
--- a/emacs-bookmark.zsh
+++ b/emacs-bookmark.zsh
@@ -120,16 +120,16 @@ function bm {
             ${=EDITOR} "${target}"
         else
             printf 'Bookmark exists, but trailing path doesn'"'"'t: "%s"\n' \
-                   "${__bm_res[3]}"
+                   "${(q)__bm_res[3]}"
             return 1
         fi
     else
-        printf 'No such bookmark: "%s"\n' "${1}"
+        printf 'No such bookmark: "%s"\n' "${(q)1}"
         return 1
     fi
 }
 function _bm {
-    local arg="${words[${CURRENT}]}"
+    local arg="${(Q)words[${CURRENT}]}"
     if ! [[ "${arg}" == */* ]]; then
         _arguments '1::bookmark:_bookmarks'
     else
@@ -137,7 +137,7 @@ function _bm {
         if [[ -d "${__bm_res[1]}" ]]; then
             local parts=(${(s:/:)__bm_res[3]})
             local bm="${${(s:/:)${arg}}[1]}"
-            local subdir="${(j:/:)parts[1,${#parts}-1]}"
+            local subdir="${(j:/:)parts[1,-2]}"
             local search="${parts[${#parts}]}"
             if ((${#parts} > 0)) && [[ "${arg}" == */ ]]; then
                 subdir="${subdir}/${search}"
@@ -145,7 +145,8 @@ function _bm {
                 search=""
             fi
             local pre_path="${__bm_res[1]}/${subdir}/"
-            local prefix="${bm}/${subdir}"
+            local raw_arg="${words[${CURRENT}]}"
+            local prefix="${${(s:/:)${raw_arg}}[1]}/${subdir}"
             if ! [[ -z "${subdir}" ]]; then
                 prefix+='/'
             fi
@@ -182,7 +183,7 @@ function bmadd {
     esac
     __bm_update_bookmark_list
     if __bm_bookmark_location "${name}" >/dev/null; then
-        printf 'Bookmark "%s" already exists. Overwrite it? [y/N] ' "${name}"
+        printf 'Bookmark "%s" already exists. Overwrite it? [y/N] ' "${(q)name}"
         read -q
         let ans=${?}
         printf '\n'
@@ -198,7 +199,7 @@ function bmadd {
         (inhibit-message t))
    (bookmark-save)
    res)")"
-    [[ "${res}" = 'nil' ]] && printf 'Added bookmark "%s"\n' "${name}" \
+    [[ "${res}" = 'nil' ]] && printf 'Added bookmark "%s"\n' "${(q)name}" \
             || { printf '%s\n' "${res}"; return 1 }
     __bm_update_bookmark_list
 }
@@ -220,7 +221,7 @@ function bmrm {
     __bm_update_bookmark_list
     __bm_bookmark_location "${1}" >/dev/null || \
         { printf 'No such bookmark: "%s"\n' "${1}"; return 1 }
-    printf 'Really delete "%s"? [y/N] ' "${1}"
+    printf 'Really delete "%s"? [y/N] ' "${(q)1}"
     if read -q; then
         printf '\n'
         local res="$(emacsclient --eval \
@@ -228,7 +229,7 @@ function bmrm {
         (inhibit-message t))
    (bookmark-save)
    res)")"
-    [[ "${res}" = 'nil' ]] && printf 'Deleted bookmark "%s"\n' "${1}" \
+    [[ "${res}" = 'nil' ]] && printf 'Deleted bookmark "%s"\n' "${(q)1}" \
             || { printf '%s\n' "${res}"; return 1 }
     else
         printf '\n'