| lettercase-package | lettercase |
| cap_words | str_cap_words |
| is_allcaps | str_uppercase, str_lowercases |
| is_all_caps | str_uppercase, str_lowercases |
| is_lower | str_uppercase, str_lowercases |
| is_lowercase | str_uppercase, str_lowercases |
| is_lower_case | str_uppercase, str_lowercases |
| is_ucfirst | str_ucfirst |
| is_upper | str_uppercase, str_lowercases |
| is_uppercase | str_uppercase, str_lowercases |
| is_upper_case | str_uppercase, str_lowercases |
| lettercase | lettercase |
| lowercase | str_uppercase, str_lowercases |
| lower_case | str_uppercase, str_lowercases |
| make_names | make_names |
| make_str_are | Test whether strings are of the specified type |
| make_str_delete | Make replace, delete and "is" functions for strings |
| make_str_is | Test whether strings are of the specified type |
| make_str_replace | Make replace, delete and "is" functions for strings |
| pattern_lowercase | Common regular expression patterns used by lettercase |
| pattern_nonword | Common regular expression patterns used by lettercase |
| pattern_separators | Common regular expression patterns used by lettercase |
| pattern_ucfirst | Common regular expression patterns used by lettercase |
| pattern_uppercase | Common regular expression patterns used by lettercase |
| pattern_whitespace | Common regular expression patterns used by lettercase |
| pattern_whitespace_like | Common regular expression patterns used by lettercase |
| pattern_word | Common regular expression patterns used by lettercase |
| str_allcaps | str_uppercase, str_lowercases |
| str_all_caps | str_uppercase, str_lowercases |
| str_are_uppercase | Test whether strings are of the specified type |
| str_are_upper_case | Test whether strings are of the specified type |
| str_capitalize | str_uppercase, str_lowercases |
| str_cap_words | str_cap_words |
| str_collapse_whitespace | Collpases multiple adjacent whitespace characters into one |
| str_collapse_ws | Collpases multiple adjacent whitespace characters into one |
| str_decapitalize | str_uppercase, str_lowercases |
| str_delete | str_delete |
| str_delete_leading_nonword | Common string transformations |
| str_delete_nonword | Common string transformations |
| str_delete_separators | Common string transformations |
| str_delete_space | Common string transformations |
| str_delete_whitespace | Common string transformations |
| str_expand_capwords | Common string transformations |
| str_hyphen_case | str_spine_case |
| str_is | Test whether strings are of the specified type |
| str_is_all | Test whether strings are of the specified type |
| str_lower | str_uppercase, str_lowercases |
| str_lowercase | str_uppercase, str_lowercases |
| str_lower_case | str_uppercase, str_lowercases |
| str_sentence_case | str_sentence_case |
| str_snake_case | str_snake_case |
| str_spinal_case | str_spine_case |
| str_spine_case | str_spine_case |
| str_title_case | str_title_case |
| str_transform | str_transform |
| str_ucfirst | str_ucfirst |
| str_upper | str_uppercase, str_lowercases |
| str_uppercase | str_uppercase, str_lowercases |
| str_upper_case | str_uppercase, str_lowercases |
| uppercase | str_uppercase, str_lowercases |
| upper_case | str_uppercase, str_lowercases |