ENH: Do not require prefixes to be into additional dict

Do not require prefixes to be specified in the additional
dictionary and perform camel case splitting after removing
the prefix

Since a given prefix may not have been added to the dictionary,
this commit adds an explicit check to verify that the remaining
of the word is valid after stripping the prefix.

Author: jcfr

codespell.py

@@ -146,6 +146,16 @@ def spell_check_comment(
                     if spell_checker.check(wrd):
                         valid = True
                         break
+                    else:
+                        # Try splitting camel case words and checking each sub-words
+                        if output_lvl > 1:
+                            print("Trying splitting camel case word: {wrd}")
+                        sub_words = splitCamelCase(wrd)
+                        if len(sub_words) > 1 and spell_check_words(
+                            spell_checker, sub_words
+                        ):
+                            valid = True
+                            break
                 except BaseException:
                     print(f"Caught an exception for word {error_word} {wrd}")
 

tests/example.h

@@ -12,6 +12,7 @@
 //
 // Prefix and camel case test word:
 // sitkWhiskeyTangoFoxtrot
+// myprefixAttributeName
 //
 // Dictionary test word:
 // BinaryFillholeImageFilter

tests/test_codespell.py

@@ -23,6 +23,8 @@ def test_codespell(self):
                 "--verbose",
                 "--dict",
                 "tests/dict.txt",
+                "--prefix",
+                "myprefix",
                 "tests/example.h",
             ]
         )
@@ -38,6 +40,8 @@ def test_codespell(self):
                 "python",
                 "codespell.py",
                 "--verbose",
+                "--prefix",
+                "myprefix",
                 "--suffix",
                 ".py",
                 "--suffix",