+(defconst bengali-composable-pattern
+ (let ((table
+ '(("a" . "\u0981") ; SIGN CANDRABINDU
+ ("A" . "[\u0982-\u0983]") ; SIGN ANUSVARA .. VISARGA
+ ("V" . "[\u0985-\u0994\u09E0-\u09E1]") ; independent vowel
+ ("C" . "[\u0995-\u09B9\u09DC-\u09DF\u09F1]") ; consonant
+ ("B" . "[\u09AC\u09AF-\u09B0\u09F0]") ; BA, YA, RA
+ ("R" . "[\u09B0\u09F0]") ; RA
+ ("n" . "\u09BC") ; NUKTA
+ ("v" . "[\u09BE-\u09CC\u09D7\u09E2-\u09E3]") ; vowel sign
+ ("H" . "\u09CD") ; HALANT
+ ("T" . "\u09CE") ; KHANDA TA
+ ("N" . "\u200C") ; ZWNJ
+ ("J" . "\u200D") ; ZWJ
+ ("X" . "[\u0980-\u09FF]")))) ; all coverage
+ (indian-compose-regexp
+ (concat
+ ;; syllables with an independent vowel, or
+ "\\(?:RH\\)?Vn?\\(?:J?HB\\)?v*n?a?A?\\|"
+ ;; consonant-based syllables, or
+ "Cn?\\(?:J?HJ?Cn?\\)*\\(?:H[NJ]?\\|v*[NJ]?v?a?A?\\)\\|"
+ ;; another syllables with an independent vowel, or
+ "\\(?:RH\\)?T\\|"
+ ;; special consonant form, or
+ "JHB\\|"
+ ;; any other singleton characters
+ "X")
+ table))
+ "Regexp matching a composable sequence of Bengali characters.")
+
+(defconst gurmukhi-composable-pattern
+ (let ((table
+ '(("a" . "[\u0A01-\u0A02\u0A70]") ; SIGN ADAK BINDI .. BINDI, TIPPI
+ ("A" . "\u0A03") ; SIGN VISARGA
+ ("V" . "[\u0A05-\u0A14]") ; independent vowel
+ ("C" . "[\u0A15-\u0A39\u0A59-\u0A5E]") ; consonant
+ ("Y" . "[\u0A2F-u0A30\u0A35\u0A39]") ; YA, RA, VA, HA
+ ("n" . "\u0A3C") ; NUKTA
+ ("v" . "[\u0A3E-\u0A4C]") ; vowel sign
+ ("H" . "\u0A4D") ; VIRAMA
+ ("N" . "\u200C") ; ZWNJ
+ ("J" . "\u200D") ; ZWJ
+ ("X" . "[\u0A00-\u0A7F]")))) ; all coverage
+ (indian-compose-regexp
+ (concat
+ ;; consonant-based syllables, or
+ "Cn?\\(?:J?HJ?Cn?\\)*\\(?:H[NJ]?\\|v*n?a?A?\\)\\|"
+ ;; syllables with an independent vowel, or
+ "Vn?\\(?:J?HY\\)?v*n?a?A?\\|"
+ ;; special consonant form, or
+ "JHY\\|"
+ ;; any other singleton characters
+ "X")
+ table))
+ "Regexp matching a composable sequence of Gurmukhi characters.")
+
+(defconst gujarati-composable-pattern
+ (let ((table
+ '(("a" . "[\u0A81-\u0A82]") ; SIGN CANDRABINDU .. ANUSVARA
+ ("A" . "\u0A83") ; SIGN VISARGA
+ ("V" . "[\u0A85-\u0A94\u0AE0-\u0AE1]") ; independent vowel
+ ("C" . "[\u0A95-\u0AB9]") ; consonant
+ ("R" . "\u0AB0") ; RA
+ ("n" . "\u0ABC") ; NUKTA
+ ("v" . "[\u0ABE-\u0ACC\u0AE2-\u0AE3]") ; vowel sign
+ ("H" . "\u0ACD") ; VIRAMA
+ ("N" . "\u200C") ; ZWNJ
+ ("J" . "\u200D") ; ZWJ
+ ("X" . "[\u0A80-\u0AFF]")))) ; all coverage
+ (indian-compose-regexp
+ (concat
+ ;; syllables with an independent vowel, or
+ "\\(?:RH\\)?Vn?\\(?:J?HR\\)?v*n?a?A?\\|"
+ ;; consonant-based syllables, or
+ "Cn?\\(?:J?HJ?Cn?\\)*\\(?:H[NJ]?\\|v*n?a?A?\\)\\|"
+ ;; special consonant form, or
+ "JHR\\|"
+ ;; any other singleton characters
+ "X")
+ table))
+ "Regexp matching a composable sequence of Gujarati characters.")
+
+(defconst oriya-composable-pattern
+ (let ((table
+ '(("a" . "\u0B01") ; SIGN CANDRABINDU
+ ("A" . "[\u0B02-\u0B03]") ; SIGN ANUSVARA .. VISARGA
+ ("V" . "[\u0B05-\u0B14\u0B60-\u0B61]") ; independent vowel
+ ("C" . "[\u0B15-\u0B39\u0B5C-\u0B5D\u0B71]") ; consonant
+ ("B" . "[\u0B15-\u0B17\u0B1B-\u0B1D\u0B1F-\u0B21\u0B23-\u0B24\u0B27-\u0B30\u0B32-\u0B35\u0B38-\u0B39]") ; consonant with below form
+ ("R" . "\u0B30") ; RA
+ ("n" . "\u0B3C") ; NUKTA
+ ("v" . "[\u0B3E-\u0B4C\u0B56-\u0B57\u0B62-\u0B63]") ; vowel sign
+ ("H" . "\u0B4D") ; VIRAMA
+ ("N" . "\u200C") ; ZWNJ
+ ("J" . "\u200D") ; ZWJ
+ ("X" . "[\u0B00-\u0B7F]")))) ; all coverage
+ (indian-compose-regexp
+ (concat
+ ;; syllables with an independent vowel, or
+ "\\(?:RH\\)?Vn?\\(?:J?HB\\)?v*n?a?A?\\|"
+ ;; consonant-based syllables, or
+ "Cn?\\(?:J?HJ?Cn?\\)*\\(?:H[NJ]?\\|v*n?a?A?\\)\\|"
+ ;; special consonant form, or
+ "JHB\\|"
+ ;; any other singleton characters
+ "X")
+ table))
+ "Regexp matching a composable sequence of Oriya characters.")
+