diff --git a/w3m_plugins/cgi-bin/search_engines.cgi b/w3m_plugins/cgi-bin/search_engines.cgi
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+#!/usr/bin/env sh
+# AUTHOR: gotbletu (@gmail|twitter|youtube|github|lbry|odysee)
+#         https://www.youtube.com/user/gotbletu
+# DESC:   w3m search engine alias (aka smart keywords search)
+# DEMO:   https://youtu.be/bWlPpacFPlI
+#         W3M Playlist https://www.youtube.com/playlist?list=PLqv94xWU9zZ35Yv0s6zMID5JoS8qu19Kh
+# REFF:   https://github.com/felipesaa/A-vim-like-firefox-like-configuration-for-w3m/blob/master/cgi-bin/search_engines.cgi
+#         https://github.com/felipesaa/A-vim-like-firefox-like-configuration-for-w3m/blob/master/documentation/search_engines.txt
+#         https://github.com/felipesaa/A-vim-like-firefox-like-configuration-for-w3m/blob/master/urimethodmap
+#         frakswe search surfraw urimethodmap https://pastebin.com/raw/TUcRgu9y
+#         https://rubikitch.hatenadiary.org/entry/20070830/searchengine
+# REQD:   1. touch ~/.w3m/urimethodmap
+#         2. $EDITOR ~/.w3m/urimethodmap
+#             # search engine alias
+#             # note: no trailing space after %s
+#             1x: file:/cgi-bin/search_engines.cgi?%s
+#             dd: file:/cgi-bin/search_engines.cgi?%s
+#             gg: file:/cgi-bin/search_engines.cgi?%s
+#             gs: file:/cgi-bin/search_engines.cgi?%s
+#             pb: file:/cgi-bin/search_engines.cgi?%s
+#             rd: file:/cgi-bin/search_engines.cgi?%s
+#             wi: file:/cgi-bin/search_engines.cgi?%s
+#             v2: file:/cgi-bin/search_engines.cgi?%s
+#             ya: file:/cgi-bin/search_engines.cgi?%s
+#             yt: file:/cgi-bin/search_engines.cgi?%s
+#         3. chmod +x ~/.w3m/cgi-bin/search_engines.cgi
+#         4. sed -i 's@cgi_bin.*@cgi_bin ~/.w3m/cgi-bin:/usr/lib/w3m/cgi-bin:/usr/local/libexec/w3m/cgi-bin@g' ~/.w3m/config
+#         5. sed -i 's@urimethodmap.*@urimethodmap ~/.w3m/urimethodmap, /usr/etc/w3m/urimethodmap@g' ~/.w3m/config
+# USAGE:  <SearchEngine>:<Keywords;Use;SemiColon;As;Spaces>
+#         1. $ w3m -v
+#         2. press Shift-u (the default GOTO key) to access the addressbar
+#         3. press Ctrl-u to clear addressbar
+#         4. to search duckduckgo type in dd:linux;wallpapers
+#         5. to search google type in gg:anime;wallpapers
+# CLOG:   2021-05-24 turn @felipesaa script into posix, use case statement looks prettier
+
+
+# search engine alias
+# dd:linux;wallpapers --> dd
+PREFIX=$(echo "$QUERY_STRING" | cut -d ':' -f1)
+
+# user input keywords
+# dd:linux;wallpapers --> linux;wallpapers --> linux%20wallpapers
+# [Note] w3m does not allow spaces in addressbar so using ';' as 'space' instead
+INPUT=$(echo "$QUERY_STRING" | cut -d ':' -f2- | sed 's/;/%20/g')
+
+# check if w3m version has native gopher support
+GOPHER_PROTOCOL_ENABLE=$(w3m -version | grep -c "gopher")
+
+case $PREFIX in
+  1x)
+    echo "W3m-control: GOTO https://1337x.to/search/$INPUT/1/"
+    ;;
+  dd)
+    echo "W3m-control: GOTO https://lite.duckduckgo.com/lite/?q=$INPUT&kf=-1&kz=-1&kq=-1&kv=-1&k1=-1&kp=-2&kaf=1&kd=-1&kf=-1&kz=-1&kq=-1&kv=-1"
+    ;;
+  gg)
+    echo "W3m-control: GOTO https://www.google.com/search?q=$INPUT"
+    ;;
+  gs)
+    echo "W3m-control: GOTO https://portal.mozz.us/gemini/geminispace.info/search%3F$INPUT"
+    ;;
+  pb)
+    echo "W3m-control: GOTO https://thepiratebay10.org/search/$INPUT"
+    ;;
+  rd) # goto a subreddit by name
+    echo "W3m-control: GOTO https://www.reddit.com/r/$INPUT/.mobile"
+    ;;
+  wi)
+    echo "W3m-control: GOTO https://en.wikipedia.org/w/index.php?search=$INPUT&title=Special%3ASearch&profile=default&fulltext=1&ns0=1"
+    ;;
+  v2) # veronica-2 search gopherspace (use web proxy if no native support)
+    if [ "$GOPHER_PROTOCOL_ENABLE" = 0 ] ; then
+      echo "W3m-control: GOTO https://gopher.floodgap.com/gopher/gw?ss=gopher%3A%2F%2Fgopher.floodgap.com%2F7%2Fv2%2Fvs&sq=$INPUT"
+    else
+      echo "W3m-control: GOTO gopher://gopher.floodgap.com/7/v2/vs?$INPUT"
+    fi
+    ;;
+  ya)
+    echo "W3m-control: GOTO https://search.yahoo.com/search?p=$INPUT"
+    ;;
+  yt) # youtube via indivious
+    echo "W3m-control: GOTO https://yewtu.be/search?q=$INPUT"
+    ;;
+esac
+
+# delete temp buffer
+echo "W3m-control: DELETE_PREVBUF"