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+––– comment –––
+Test for force_bigrams option in CALL AUTOCOMPLETE, CALL SUGGEST, and fuzzy search
+Issue: https://github.com/manticoresoftware/manticoresearch/issues/3853
+
+This test verifies that force_bigrams parameter works correctly in three contexts:
+1. CALL AUTOCOMPLETE (tests 1-9): autocomplete with bigram-based fuzzy matching
+2. CALL SUGGEST (tests 10-15): suggestions with bigram-based fuzzy matching
+3. SELECT with OPTION fuzzy=1 (tests 16-21): regular search with fuzzy option
+––– block: ../base/start-searchd-with-buddy –––
+––– input –––
+mysql -P9306 -h0 -e "drop table if exists t"
+––– output –––
+––– input –––
+mysql -P9306 -h0 -e "create table t(f text) min_infix_len='2'"
+––– output –––
+––– input –––
+mysql -P9306 -h0 -e "insert into t values(1,'iphone george planet letter')"
+––– output –––
+––– comment –––
+Test 1: force_bigrams=1 finds transposition errors
+––– input –––
+mysql -P9306 -h0 -e "call autocomplete('ipohne', 't', 1 as force_bigrams)\G"
+––– output –––
+*************************** 1. row ***************************
+query: iphone
+––– comment –––
+Test 2: force_bigrams=0 does NOT find transpositions in long words
+––– input –––
+mysql -P9306 -h0 -e "call autocomplete('ipohne', 't', 0 as force_bigrams)\G"
+––– output –––
+––– comment –––
+Test 3: Transposition with force_bigrams=1
+––– input –––
+mysql -P9306 -h0 -e "call autocomplete('geroge', 't', 1 as force_bigrams)\G"
+––– output –––
+*************************** 1. row ***************************
+query: george
+––– comment –––
+Test 4: Same word with force_bigrams=0 - does NOT find transposition
+––– input –––
+mysql -P9306 -h0 -e "call autocomplete('geroge', 't', 0 as force_bigrams)\G"
+––– output –––
+––– comment –––
+Test 5: 6-char word "planet" (boundary case), force_bigrams=0, expect: found
+Note: "lanet" uses bigrams, "planet" uses trigrams, but fuzzy matching still works (edit distance=1)
+––– input –––
+mysql -P9306 -h0 -e "call autocomplete('lanet', 't', 0 as force_bigrams)\G"
+––– output –––
+*************************** 1. row ***************************
+query: planet
+––– comment –––
+Test 6: Same word with force_bigrams=1, expect: found (same result as Test 5)
+––– input –––
+mysql -P9306 -h0 -e "call autocomplete('lanet', 't', 1 as force_bigrams)\G"
+––– output –––
+*************************** 1. row ***************************
+query: planet
+––– comment –––
+Test 7: Append option with force_bigrams
+––– input –––
+mysql -P9306 -h0 -e "call autocomplete('geor', 't', 1 as append, 1 as force_bigrams)\G"
+––– output –––
+*************************** 1. row ***************************
+query: george
+––– comment –––
+Test 8: Prepend option with force_bigrams
+––– input –––
+mysql -P9306 -h0 -e "call autocomplete('eorge', 't', 1 as prepend, 1 as force_bigrams)\G"
+––– output –––
+*************************** 1. row ***************************
+query: george
+––– comment –––
+Test 9: Multiple options with force_bigrams
+––– input –––
+mysql -P9306 -h0 -e "call autocomplete('geor', 't', 1 as fuzziness, 1 as append, 1 as prepend, 1 as force_bigrams)\G"
+––– output –––
+*************************** 1. row ***************************
+query: george
+––– comment –––
+Test 10: CALL SUGGEST with force_bigrams=1, transposition in 6-char word
+––– input –––
+mysql -P9306 -h0 -e "call suggest('ipohne', 't', 1 as force_bigrams)\G"
+––– output –––
+*************************** 1. row ***************************
+ suggest: iphone
+distance: 2
+    docs: 1
+*************************** 2. row ***************************
+ suggest: planet
+distance: 4
+    docs: 1
+––– comment –––
+Test 11: CALL SUGGEST with force_bigrams=0, same word, expect: NOT found
+––– input –––
+mysql -P9306 -h0 -e "call suggest('ipohne', 't', 0 as force_bigrams)\G"
+––– output –––
+––– comment –––
+Test 12: CALL SUGGEST with force_bigrams=1, transposition in "george"
+––– input –––
+mysql -P9306 -h0 -e "call suggest('geroge', 't', 1 as force_bigrams)\G"
+––– output –––
+*************************** 1. row ***************************
+ suggest: george
+distance: 2
+    docs: 1
+––– comment –––
+Test 13: CALL SUGGEST with force_bigrams=0, same word, expect: NOT found
+––– input –––
+mysql -P9306 -h0 -e "call suggest('geroge', 't', 0 as force_bigrams)\G"
+––– output –––
+––– comment –––
+Test 14: CALL SUGGEST with force_bigrams=0, "planet" boundary case, expect: found
+––– input –––
+mysql -P9306 -h0 -e "call suggest('lanet', 't', 0 as force_bigrams)\G"
+––– output –––
+*************************** 1. row ***************************
+ suggest: planet
+distance: 1
+    docs: 1
+*************************** 2. row ***************************
+ suggest: letter
+distance: 4
+    docs: 1
+––– comment –––
+Test 15: CALL SUGGEST with force_bigrams=1, same word, expect: found (same result)
+––– input –––
+mysql -P9306 -h0 -e "call suggest('lanet', 't', 1 as force_bigrams)\G"
+––– output –––
+*************************** 1. row ***************************
+ suggest: planet
+distance: 1
+    docs: 1
+*************************** 2. row ***************************
+ suggest: letter
+distance: 4
+    docs: 1
+––– comment –––
+Test 16: SELECT with force_bigrams=1, transposition in 6-char word
+––– input –––
+mysql -P9306 -h0 -e "SELECT * FROM t WHERE MATCH('ipohne') OPTION fuzzy=1, force_bigrams=1"
+––– output –––
++------+-----------------------------+
+| id   | f                           |
++------+-----------------------------+
+|    1 | iphone george planet letter |
++------+-----------------------------+
+––– comment –––
+Test 17: SELECT with force_bigrams=0, same word, expect: NOT found
+––– input –––
+mysql -P9306 -h0 -e "SELECT * FROM t WHERE MATCH('ipohne') OPTION fuzzy=1, force_bigrams=0"
+––– output –––
+––– comment –––
+Test 18: SELECT with force_bigrams=1, transposition in "george"
+––– input –––
+mysql -P9306 -h0 -e "SELECT * FROM t WHERE MATCH('geroge') OPTION fuzzy=1, force_bigrams=1"
+––– output –––
++------+-----------------------------+
+| id   | f                           |
++------+-----------------------------+
+|    1 | iphone george planet letter |
++------+-----------------------------+
+––– comment –––
+Test 19: SELECT with force_bigrams=0, same word, expect: NOT found
+––– input –––
+mysql -P9306 -h0 -e "SELECT * FROM t WHERE MATCH('geroge') OPTION fuzzy=1, force_bigrams=0"
+––– output –––
+––– comment –––
+Test 20: SELECT with force_bigrams=0, "planet" boundary case, expect: found
+––– input –––
+mysql -P9306 -h0 -e "SELECT * FROM t WHERE MATCH('lanet') OPTION fuzzy=1, force_bigrams=0"
+––– output –––
++------+-----------------------------+
+| id   | f                           |
++------+-----------------------------+
+|    1 | iphone george planet letter |
++------+-----------------------------+
+––– comment –––
+Test 21: SELECT with force_bigrams=1, same word, expect: found (same result)
+––– input –––
+mysql -P9306 -h0 -e "SELECT * FROM t WHERE MATCH('lanet') OPTION fuzzy=1, force_bigrams=1"
+––– output –––
++------+-----------------------------+
+| id   | f                           |
++------+-----------------------------+
+|    1 | iphone george planet letter |
++------+-----------------------------+
+––– input –––
+mysql -P9306 -h0 -e "drop table t"
+––– output –––