PyThaiNLP · wannaphong · May 9, 2025 · May 9, 2025 · May 9, 2025
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -11,12 +11,16 @@ Notable changes between versions.
 - For full release notes, see:
   <https://github.com/PyThaiNLP/pythainlp/releases>
 - For detailed commit changes, see:
-  <https://github.com/PyThaiNLP/pythainlp/compare/v5.1.1...dev> (select tags to compare)
+  <https://github.com/PyThaiNLP/pythainlp/compare/v5.1.2...dev> (select tags to compare)
 
-## Version 5.1.1 -> Dev
+## Version 5.1.2 -> Dev
 
 [WIP]
 
+## Version 5.1.1 -> 5.1.2
+
+- Update romanize docs and keep space #1110
+
 ## Version 5.1.0 -> 5.1.1
 
 - PR Description: Refactor thai_consonants_all to Use set in syllable.py #1087

diff --git a/CITATION.cff b/CITATION.cff
@@ -45,5 +45,5 @@ keywords:
   - "Thai language"
   - "Thai NLP"
 license: Apache-2.0
-version: 5.1.1
-date-released: "2025-03-31"
+version: 5.1.2
+date-released: "2025-05-09"
diff --git a/README.md b/README.md
@@ -30,7 +30,7 @@ pip install pythainlp
 
 | Version | Description | Status |
 |:------:|:--:|:------:|
-| [5.1.1](https://github.com/PyThaiNLP/pythainlp/releases) | Stable | [Change Log](https://github.com/PyThaiNLP/pythainlp/issues/900) |
+| [5.1.2](https://github.com/PyThaiNLP/pythainlp/releases) | Stable | [Change Log](https://github.com/PyThaiNLP/pythainlp/issues/900) |
 | [`dev`](https://github.com/PyThaiNLP/pythainlp/tree/dev) | Release Candidate for 5.2 | [Change Log](https://github.com/PyThaiNLP/pythainlp/issues/1080) |
 
 ## Getting Started

diff --git a/README_TH.md b/README_TH.md
@@ -26,7 +26,7 @@ pip install pythainlp
 
 | รุ่น | คำอธิบาย | สถานะ |
 |:------:|:--:|:------:|
-| [5.1.1](https://github.com/PyThaiNLP/pythainlp/releases) | Stable | [Change Log](https://github.com/PyThaiNLP/pythainlp/issues/900) |
+| [5.1.2](https://github.com/PyThaiNLP/pythainlp/releases) | Stable | [Change Log](https://github.com/PyThaiNLP/pythainlp/issues/900) |
 | [`dev`](https://github.com/PyThaiNLP/pythainlp/tree/dev) | Release Candidate for 5.2  | [Change Log](https://github.com/PyThaiNLP/pythainlp/issues/1080) |
 
 ติดตามพวกเราบน [PyThaiNLP Facebook page](https://www.facebook.com/pythainlp/) เพื่อรับข่าวสารเพิ่มเติม

diff --git a/codemeta.json b/codemeta.json
@@ -3,7 +3,7 @@
   "@type": "SoftwareSourceCode",
   "name": "PyThaiNLP",
   "description": "Thai Natural Language Processing in Python",
-  "version": "5.1.1",
+  "version": "5.1.2",
   "author": [
     {
       "@type": "Person",

diff --git a/pythainlp/__init__.py b/pythainlp/__init__.py
@@ -2,7 +2,7 @@
 # SPDX-FileCopyrightText: 2016-2025 PyThaiNLP Project
 # SPDX-FileType: SOURCE
 # SPDX-License-Identifier: Apache-2.0
-__version__ = "5.1.1"
+__version__ = "5.1.2"
 
 thai_consonants = "กขฃคฅฆงจฉชซฌญฎฏฐฑฒณดตถทธนบปผฝพฟภมยรลวศษสหฬอฮ"  # 44 chars
 

diff --git a/pythainlp/transliterate/core.py b/pythainlp/transliterate/core.py
@@ -14,17 +14,19 @@ def romanize(
     fallback_engine: str = DEFAULT_ROMANIZE_ENGINE,
 ) -> str:
     """
-    This function renders Thai words in the Latin alphabet or "romanization",
+    This function renders Thai word in the Latin alphabet or "romanization",
     using the Royal Thai General System of Transcription (RTGS)
     [#rtgs_transcription]_. RTGS is the official system published
     by the Royal Institute of Thailand. (Thai: ถอดเสียงภาษาไทยเป็นอักษรละติน)
 
-    :param str text: Thai text to be romanized
+    :param str text: A Thai word to be romanized. \
+        The input should not include whitespace because \
+        the function is support subwords by spliting whitespace.
     :param str engine: One of 'royin' (default), 'thai2rom', 'thai2rom_onnx, 'tltk', and 'lookup'. See more in options for engine section.
     :param str fallback_engine: If engine equals 'lookup', use `fallback_engine` for words that are not in the transliteration dict.
                                 No effect on other engines. Default to 'royin'.
 
-    :return: A string of Thai words rendered in the Latin alphabet.
+    :return: A string of a Thai word rendered in the Latin alphabet.
     :rtype: str
 
     :Options for engines:
@@ -53,6 +55,9 @@ def romanize(
         romanize("ภาพยนตร์", engine="royin")
         # output: 'phapn'
 
+        romanize("รส ดี", engine="royin") # subwords
+        # output: 'rot di'
+
         romanize("ภาพยนตร์", engine="thai2rom")
         # output: 'phapphayon'
 
@@ -87,9 +92,9 @@ def select_romanize_engine(engine: str):
     else:
         rom_engine = select_romanize_engine(engine)
         trans_word = []
-        for word in text.split(' '):
-            trans_word.append(rom_engine(word))
-        new_word = ''.join(trans_word)
+        for subword in text.split(' '):
+            trans_word.append(rom_engine(subword))
+        new_word = ' '.join(trans_word)
         return new_word
 
 

diff --git a/setup.cfg b/setup.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 5.1.1
+current_version = 5.1.2
 commit = True
 tag = True
 parse = (?P<major>\d+)\.(?P<minor>\d+)\.(?P<patch>\d+)(\-(?P<release>[a-z]+)(?P<build>\d+))?

diff --git a/setup.py b/setup.py
@@ -150,7 +150,7 @@
 
 setup(
     name="pythainlp",
-    version="5.1.1",
+    version="5.1.2",
     description="Thai Natural Language Processing library",
     long_description=LONG_DESC,
     long_description_content_type="text/markdown",