diff -r 9a72258446cd -r 563033aa998c src/cx/string.h
--- a/src/cx/string.h	Sat Oct 11 15:42:48 2025 +0200
+++ b/src/cx/string.h	Sun Oct 12 20:21:56 2025 +0200
@@ -112,10 +112,10 @@
      */
     size_t pos;
     /**
-     * Position of next delimiter in the source string.
+     * Position of the next delimiter in the source string.
      *
      * If the tokenizer has not yet returned a token, the content of this field
-     * is undefined. If the tokenizer reached the end of the string, this field
+     * is undefined. If the tokenizer reaches the end of the string, this field
      * contains the length of the source string.
      */
     size_t delim_pos;
@@ -174,7 +174,7 @@
  *
  * If you need to wrap a constant string, use cx_str().
  *
- * @param cstring the string to wrap, must be zero-terminated
+ * @param cstring the string to wrap (must be zero-terminated)
  * @return the wrapped string
  *
  * @see cx_mutstrn()
@@ -220,7 +220,7 @@
  *
  * If you need to wrap a non-constant string, use cx_mutstr().
  *
- * @param cstring the string to wrap, must be zero-terminated
+ * @param cstring the string to wrap (must be zero-terminated)
  * @return the wrapped string
  *
  * @see cx_strn()
@@ -321,12 +321,12 @@
 /**
  * Passes the pointer in this string to the cxDefaultAllocator's @c free() function.
  *
- * The pointer in the struct is set to @c NULL and the length is set to zero
+ * The pointer in the struct is set to @c NULL, and the length is set to zero,
  * which means that this function protects you against double-free.
  *
  * @note There is no implementation for cxstring, because it is unlikely that
  * you ever have a <code>const char*</code> you are really supposed to free.
- * If you encounter such situation, you should double-check your code.
+ * If you encounter such a situation, you should double-check your code.
  *
  * @param str the string to free
  */
@@ -334,14 +334,14 @@
 void cx_strfree(cxmutstr *str);
 
 /**
- * Passes the pointer in this string to the allocators free function.
+ * Passes the pointer in this string to the allocator's free function.
  *
- * The pointer in the struct is set to @c NULL and the length is set to zero
+ * The pointer in the struct is set to @c NULL, and the length is set to zero,
  * which means that this function protects you against double-free.
  *
  * @note There is no implementation for cxstring, because it is unlikely that
  * you ever have a <code>const char*</code> you are really supposed to free.
- * If you encounter such situation, you should double-check your code.
+ * If you encounter such a situation, you should double-check your code.
  *
  * @param alloc the allocator
  * @param str the string to free
@@ -983,7 +983,7 @@
 cxmutstr cx_strtrim_m(cxmutstr string);
 
 /**
- * Checks, if a string has a specific prefix.
+ * Checks if a string has a specific prefix.
  *
  * @param string the string to check
  * @param prefix the prefix the string should have
@@ -998,7 +998,7 @@
 );
 
 /**
- * Checks, if a string has a specific suffix.
+ * Checks if a string has a specific suffix.
  *
  * @param string the string to check
  * @param suffix the suffix the string should have
@@ -1013,7 +1013,7 @@
 );
 
 /**
- * Checks, if a string has a specific prefix, ignoring the case.
+ * Checks if a string has a specific prefix, ignoring the case.
  *
  * @param string the string to check
  * @param prefix the prefix the string should have
@@ -1045,7 +1045,7 @@
 /**
  * Replaces a string with another string.
  *
- * Replaces at most @p replmax occurrences.
+ * The function replaces at most @p replmax occurrences.
  *
  * The returned string will be allocated by @p allocator and is guaranteed
  * to be zero-terminated.
@@ -1074,7 +1074,7 @@
 /**
  * Replaces a string with another string.
  *
- * Replaces at most @p replmax occurrences.
+ * The function replaces at most @p replmax occurrences.
  *
  * The returned string will be allocated by the cxDefaultAllocator and is guaranteed
  * to be zero-terminated.
@@ -1225,7 +1225,7 @@
  * @param str the string to convert
  * @param output a pointer to the integer variable where the result shall be stored
  * @param base 2, 8, 10, or 16
- * @param groupsep each character in this string is treated as group separator and ignored during conversion
+ * @param groupsep each character in this string is treated as a group separator and ignored during conversion
  * @retval zero success
  * @retval non-zero conversion was not possible
  */
@@ -1242,7 +1242,7 @@
  * @param str the string to convert
  * @param output a pointer to the integer variable where the result shall be stored
  * @param base 2, 8, 10, or 16
- * @param groupsep each character in this string is treated as group separator and ignored during conversion
+ * @param groupsep each character in this string is treated as a group separator and ignored during conversion
  * @retval zero success
  * @retval non-zero conversion was not possible
  */
@@ -1259,7 +1259,7 @@
  * @param str the string to convert
  * @param output a pointer to the integer variable where the result shall be stored
  * @param base 2, 8, 10, or 16
- * @param groupsep each character in this string is treated as group separator and ignored during conversion
+ * @param groupsep each character in this string is treated as a group separator and ignored during conversion
  * @retval zero success
  * @retval non-zero conversion was not possible
  */
@@ -1276,7 +1276,7 @@
  * @param str the string to convert
  * @param output a pointer to the integer variable where the result shall be stored
  * @param base 2, 8, 10, or 16
- * @param groupsep each character in this string is treated as group separator and ignored during conversion
+ * @param groupsep each character in this string is treated as a group separator and ignored during conversion
  * @retval zero success
  * @retval non-zero conversion was not possible
  */
@@ -1293,7 +1293,7 @@
  * @param str the string to convert
  * @param output a pointer to the integer variable where the result shall be stored
  * @param base 2, 8, 10, or 16
- * @param groupsep each character in this string is treated as group separator and ignored during conversion
+ * @param groupsep each character in this string is treated as a group separator and ignored during conversion
  * @retval zero success
  * @retval non-zero conversion was not possible
  */
@@ -1310,7 +1310,7 @@
  * @param str the string to convert
  * @param output a pointer to the integer variable where the result shall be stored
  * @param base 2, 8, 10, or 16
- * @param groupsep each character in this string is treated as group separator and ignored during conversion
+ * @param groupsep each character in this string is treated as a group separator and ignored during conversion
  * @retval zero success
  * @retval non-zero conversion was not possible
  */
@@ -1327,7 +1327,7 @@
  * @param str the string to convert
  * @param output a pointer to the integer variable where the result shall be stored
  * @param base 2, 8, 10, or 16
- * @param groupsep each character in this string is treated as group separator and ignored during conversion
+ * @param groupsep each character in this string is treated as a group separator and ignored during conversion
  * @retval zero success
  * @retval non-zero conversion was not possible
  */
@@ -1344,7 +1344,7 @@
  * @param str the string to convert
  * @param output a pointer to the integer variable where the result shall be stored
  * @param base 2, 8, 10, or 16
- * @param groupsep each character in this string is treated as group separator and ignored during conversion
+ * @param groupsep each character in this string is treated as a group separator and ignored during conversion
  * @retval zero success
  * @retval non-zero conversion was not possible
  */
@@ -1361,7 +1361,7 @@
  * @param str the string to convert
  * @param output a pointer to the integer variable where the result shall be stored
  * @param base 2, 8, 10, or 16
- * @param groupsep each character in this string is treated as group separator and ignored during conversion
+ * @param groupsep each character in this string is treated as a group separator and ignored during conversion
  * @retval zero success
  * @retval non-zero conversion was not possible
  */
@@ -1378,7 +1378,7 @@
  * @param str the string to convert
  * @param output a pointer to the integer variable where the result shall be stored
  * @param base 2, 8, 10, or 16
- * @param groupsep each character in this string is treated as group separator and ignored during conversion
+ * @param groupsep each character in this string is treated as a group separator and ignored during conversion
  * @retval zero success
  * @retval non-zero conversion was not possible
  */
@@ -1395,7 +1395,7 @@
  * @param str the string to convert
  * @param output a pointer to the integer variable where the result shall be stored
  * @param base 2, 8, 10, or 16
- * @param groupsep each character in this string is treated as group separator and ignored during conversion
+ * @param groupsep each character in this string is treated as a group separator and ignored during conversion
  * @retval zero success
  * @retval non-zero conversion was not possible
  */
@@ -1412,7 +1412,7 @@
  * @param str the string to convert
  * @param output a pointer to the integer variable where the result shall be stored
  * @param base 2, 8, 10, or 16
- * @param groupsep each character in this string is treated as group separator and ignored during conversion
+ * @param groupsep each character in this string is treated as a group separator and ignored during conversion
  * @retval zero success
  * @retval non-zero conversion was not possible
  */
@@ -1429,7 +1429,7 @@
  * @param str the string to convert
  * @param output a pointer to the integer variable where the result shall be stored
  * @param base 2, 8, 10, or 16
- * @param groupsep each character in this string is treated as group separator and ignored during conversion
+ * @param groupsep each character in this string is treated as a group separator and ignored during conversion
  * @retval zero success
  * @retval non-zero conversion was not possible
  */
@@ -1446,7 +1446,7 @@
  * @param str the string to convert
  * @param output a pointer to the integer variable where the result shall be stored
  * @param base 2, 8, 10, or 16
- * @param groupsep each character in this string is treated as group separator and ignored during conversion
+ * @param groupsep each character in this string is treated as a group separator and ignored during conversion
  * @retval zero success
  * @retval non-zero conversion was not possible
  */
@@ -1463,7 +1463,7 @@
  * @param str the string to convert
  * @param output a pointer to the integer variable where the result shall be stored
  * @param base 2, 8, 10, or 16
- * @param groupsep each character in this string is treated as group separator and ignored during conversion
+ * @param groupsep each character in this string is treated as a group separator and ignored during conversion
  * @retval zero success
  * @retval non-zero conversion was not possible
  */
@@ -1480,7 +1480,7 @@
  * @param str the string to convert
  * @param output a pointer to the integer variable where the result shall be stored
  * @param base 2, 8, 10, or 16
- * @param groupsep each character in this string is treated as group separator and ignored during conversion
+ * @param groupsep each character in this string is treated as a group separator and ignored during conversion
  * @retval zero success
  * @retval non-zero conversion was not possible
  */
@@ -1497,7 +1497,7 @@
  * @param str the string to convert
  * @param output a pointer to the integer variable where the result shall be stored
  * @param base 2, 8, 10, or 16
- * @param groupsep each character in this string is treated as group separator and ignored during conversion
+ * @param groupsep each character in this string is treated as a group separator and ignored during conversion
  * @retval zero success
  * @retval non-zero conversion was not possible
  */
@@ -1505,7 +1505,7 @@
 int cx_strtoz_lc_(cxstring str, size_t *output, int base, const char *groupsep);
 
 /**
- * Converts a string to a single precision floating point number.
+ * Converts a string to a single precision floating-point number.
  *
  * The function returns non-zero when conversion is not possible.
  * In that case the function sets errno to EINVAL when the reason is an invalid character.
@@ -1514,7 +1514,7 @@
  * @param str the string to convert
  * @param output a pointer to the float variable where the result shall be stored
  * @param decsep the decimal separator
- * @param groupsep each character in this string is treated as group separator and ignored during conversion
+ * @param groupsep each character in this string is treated as a group separator and ignored during conversion
  * @retval zero success
  * @retval non-zero conversion was not possible
  */
@@ -1522,7 +1522,7 @@
 int cx_strtof_lc_(cxstring str, float *output, char decsep, const char *groupsep);
 
 /**
- * Converts a string to a double precision floating point number.
+ * Converts a string to a double precision floating-point number.
  *
  * The function returns non-zero when conversion is not possible.
  * In that case the function sets errno to EINVAL when the reason is an invalid character.
@@ -1531,7 +1531,7 @@
  * @param str the string to convert
  * @param output a pointer to the float variable where the result shall be stored
  * @param decsep the decimal separator
- * @param groupsep each character in this string is treated as group separator and ignored during conversion
+ * @param groupsep each character in this string is treated as a group separator and ignored during conversion
  * @retval zero success
  * @retval non-zero conversion was not possible
  */
@@ -1548,7 +1548,7 @@
  * @param str the string to convert
  * @param output a pointer to the integer variable where the result shall be stored
  * @param base 2, 8, 10, or 16
- * @param groupsep (@c const @c char*) each character in this string is treated as group separator and ignored during conversion
+ * @param groupsep (@c const @c char*) each character in this string is treated as a group separator and ignored during conversion
  * @retval zero success
  * @retval non-zero conversion was not possible
  */
@@ -1564,7 +1564,7 @@
  * @param str the string to convert
  * @param output a pointer to the integer variable where the result shall be stored
  * @param base 2, 8, 10, or 16
- * @param groupsep (@c const @c char*) each character in this string is treated as group separator and ignored during conversion
+ * @param groupsep (@c const @c char*) each character in this string is treated as a group separator and ignored during conversion
  * @retval zero success
  * @retval non-zero conversion was not possible
  */
@@ -1580,7 +1580,7 @@
  * @param str the string to convert
  * @param output a pointer to the integer variable where the result shall be stored
  * @param base 2, 8, 10, or 16
- * @param groupsep (@c const @c char*) each character in this string is treated as group separator and ignored during conversion
+ * @param groupsep (@c const @c char*) each character in this string is treated as a group separator and ignored during conversion
  * @retval zero success
  * @retval non-zero conversion was not possible
  */
@@ -1596,7 +1596,7 @@
  * @param str the string to convert
  * @param output a pointer to the integer variable where the result shall be stored
  * @param base 2, 8, 10, or 16
- * @param groupsep (@c const @c char*) each character in this string is treated as group separator and ignored during conversion
+ * @param groupsep (@c const @c char*) each character in this string is treated as a group separator and ignored during conversion
  * @retval zero success
  * @retval non-zero conversion was not possible
  */
@@ -1612,7 +1612,7 @@
  * @param str the string to convert
  * @param output a pointer to the integer variable where the result shall be stored
  * @param base 2, 8, 10, or 16
- * @param groupsep (@c const @c char*) each character in this string is treated as group separator and ignored during conversion
+ * @param groupsep (@c const @c char*) each character in this string is treated as a group separator and ignored during conversion
  * @retval zero success
  * @retval non-zero conversion was not possible
  */
@@ -1628,7 +1628,7 @@
  * @param str the string to convert
  * @param output a pointer to the integer variable where the result shall be stored
  * @param base 2, 8, 10, or 16
- * @param groupsep (@c const @c char*) each character in this string is treated as group separator and ignored during conversion
+ * @param groupsep (@c const @c char*) each character in this string is treated as a group separator and ignored during conversion
  * @retval zero success
  * @retval non-zero conversion was not possible
  */
@@ -1644,7 +1644,7 @@
  * @param str the string to convert
  * @param output a pointer to the integer variable where the result shall be stored
  * @param base 2, 8, 10, or 16
- * @param groupsep (@c const @c char*) each character in this string is treated as group separator and ignored during conversion
+ * @param groupsep (@c const @c char*) each character in this string is treated as a group separator and ignored during conversion
  * @retval zero success
  * @retval non-zero conversion was not possible
  */
@@ -1660,7 +1660,7 @@
  * @param str the string to convert
  * @param output a pointer to the integer variable where the result shall be stored
  * @param base 2, 8, 10, or 16
- * @param groupsep (@c const @c char*) each character in this string is treated as group separator and ignored during conversion
+ * @param groupsep (@c const @c char*) each character in this string is treated as a group separator and ignored during conversion
  * @retval zero success
  * @retval non-zero conversion was not possible
  */
@@ -1676,7 +1676,7 @@
  * @param str the string to convert
  * @param output a pointer to the integer variable where the result shall be stored
  * @param base 2, 8, 10, or 16
- * @param groupsep (@c const @c char*) each character in this string is treated as group separator and ignored during conversion
+ * @param groupsep (@c const @c char*) each character in this string is treated as a group separator and ignored during conversion
  * @retval zero success
  * @retval non-zero conversion was not possible
  */
@@ -1692,7 +1692,7 @@
  * @param str the string to convert
  * @param output a pointer to the integer variable where the result shall be stored
  * @param base 2, 8, 10, or 16
- * @param groupsep (@c const @c char*) each character in this string is treated as group separator and ignored during conversion
+ * @param groupsep (@c const @c char*) each character in this string is treated as a group separator and ignored during conversion
  * @retval zero success
  * @retval non-zero conversion was not possible
  */
@@ -1708,7 +1708,7 @@
  * @param str the string to convert
  * @param output a pointer to the integer variable where the result shall be stored
  * @param base 2, 8, 10, or 16
- * @param groupsep (@c const @c char*) each character in this string is treated as group separator and ignored during conversion
+ * @param groupsep (@c const @c char*) each character in this string is treated as a group separator and ignored during conversion
  * @retval zero success
  * @retval non-zero conversion was not possible
  */
@@ -1724,7 +1724,7 @@
  * @param str the string to convert
  * @param output a pointer to the integer variable where the result shall be stored
  * @param base 2, 8, 10, or 16
- * @param groupsep (@c const @c char*) each character in this string is treated as group separator and ignored during conversion
+ * @param groupsep (@c const @c char*) each character in this string is treated as a group separator and ignored during conversion
  * @retval zero success
  * @retval non-zero conversion was not possible
  */
@@ -1740,7 +1740,7 @@
  * @param str the string to convert
  * @param output a pointer to the integer variable where the result shall be stored
  * @param base 2, 8, 10, or 16
- * @param groupsep (@c const @c char*) each character in this string is treated as group separator and ignored during conversion
+ * @param groupsep (@c const @c char*) each character in this string is treated as a group separator and ignored during conversion
  * @retval zero success
  * @retval non-zero conversion was not possible
  */
@@ -1756,7 +1756,7 @@
  * @param str the string to convert
  * @param output a pointer to the integer variable where the result shall be stored
  * @param base 2, 8, 10, or 16
- * @param groupsep (@c const @c char*) each character in this string is treated as group separator and ignored during conversion
+ * @param groupsep (@c const @c char*) each character in this string is treated as a group separator and ignored during conversion
  * @retval zero success
  * @retval non-zero conversion was not possible
  */
@@ -1772,7 +1772,7 @@
  * @param str the string to convert
  * @param output a pointer to the integer variable where the result shall be stored
  * @param base 2, 8, 10, or 16
- * @param groupsep (@c const @c char*) each character in this string is treated as group separator and ignored during conversion
+ * @param groupsep (@c const @c char*) each character in this string is treated as a group separator and ignored during conversion
  * @retval zero success
  * @retval non-zero conversion was not possible
  */
@@ -1788,7 +1788,7 @@
  * @param str the string to convert
  * @param output a pointer to the integer variable where the result shall be stored
  * @param base 2, 8, 10, or 16
- * @param groupsep (@c const @c char*) each character in this string is treated as group separator and ignored during conversion
+ * @param groupsep (@c const @c char*) each character in this string is treated as a group separator and ignored during conversion
  * @retval zero success
  * @retval non-zero conversion was not possible
  */
@@ -1804,7 +1804,7 @@
  * @param str the string to convert
  * @param output a pointer to the integer variable where the result shall be stored
  * @param base 2, 8, 10, or 16
- * @param groupsep (@c const @c char*) each character in this string is treated as group separator and ignored during conversion
+ * @param groupsep (@c const @c char*) each character in this string is treated as a group separator and ignored during conversion
  * @retval zero success
  * @retval non-zero conversion was not possible
  */
@@ -1817,7 +1817,7 @@
  * In that case the function sets errno to EINVAL when the reason is an invalid character or an unsupported base.
  * It sets errno to ERANGE when the target datatype is too small.
  *
- * The comma character is treated as group separator and ignored during parsing.
+ * The comma character is treated as a group separator and ignored during parsing.
  * If you want to choose the set of group separators, use the @c _lc variant of this function (e.g. cx_strtoz_lc()).
  *
  * @param str the string to convert
@@ -1835,7 +1835,7 @@
  * In that case the function sets errno to EINVAL when the reason is an invalid character or an unsupported base.
  * It sets errno to ERANGE when the target datatype is too small.
  *
- * The comma character is treated as group separator and ignored during parsing.
+ * The comma character is treated as a group separator and ignored during parsing.
  * If you want to choose the set of group separators, use the @c _lc variant of this function (e.g. cx_strtoz_lc()).
  *
  * @param str the string to convert
@@ -1853,7 +1853,7 @@
  * In that case the function sets errno to EINVAL when the reason is an invalid character or an unsupported base.
  * It sets errno to ERANGE when the target datatype is too small.
  *
- * The comma character is treated as group separator and ignored during parsing.
+ * The comma character is treated as a group separator and ignored during parsing.
  * If you want to choose the set of group separators, use the @c _lc variant of this function (e.g. cx_strtoz_lc()).
  *
  * @param str the string to convert
@@ -1871,7 +1871,7 @@
  * In that case the function sets errno to EINVAL when the reason is an invalid character or an unsupported base.
  * It sets errno to ERANGE when the target datatype is too small.
  *
- * The comma character is treated as group separator and ignored during parsing.
+ * The comma character is treated as a group separator and ignored during parsing.
  * If you want to choose the set of group separators, use the @c _lc variant of this function (e.g. cx_strtoz_lc()).
  *
  * @param str the string to convert
@@ -1889,7 +1889,7 @@
  * In that case the function sets errno to EINVAL when the reason is an invalid character or an unsupported base.
  * It sets errno to ERANGE when the target datatype is too small.
  *
- * The comma character is treated as group separator and ignored during parsing.
+ * The comma character is treated as a group separator and ignored during parsing.
  * If you want to choose the set of group separators, use the @c _lc variant of this function (e.g. cx_strtoz_lc()).
  *
  * @param str the string to convert
@@ -1907,7 +1907,7 @@
  * In that case the function sets errno to EINVAL when the reason is an invalid character or an unsupported base.
  * It sets errno to ERANGE when the target datatype is too small.
  *
- * The comma character is treated as group separator and ignored during parsing.
+ * The comma character is treated as a group separator and ignored during parsing.
  * If you want to choose the set of group separators, use the @c _lc variant of this function (e.g. cx_strtoz_lc()).
  *
  * @param str the string to convert
@@ -1925,7 +1925,7 @@
  * In that case the function sets errno to EINVAL when the reason is an invalid character or an unsupported base.
  * It sets errno to ERANGE when the target datatype is too small.
  *
- * The comma character is treated as group separator and ignored during parsing.
+ * The comma character is treated as a group separator and ignored during parsing.
  * If you want to choose the set of group separators, use the @c _lc variant of this function (e.g. cx_strtoz_lc()).
  *
  * @param str the string to convert
@@ -1943,7 +1943,7 @@
  * In that case the function sets errno to EINVAL when the reason is an invalid character or an unsupported base.
  * It sets errno to ERANGE when the target datatype is too small.
  *
- * The comma character is treated as group separator and ignored during parsing.
+ * The comma character is treated as a group separator and ignored during parsing.
  * If you want to choose the set of group separators, use the @c _lc variant of this function (e.g. cx_strtoz_lc()).
  *
  * @param str the string to convert
@@ -1961,7 +1961,7 @@
  * In that case the function sets errno to EINVAL when the reason is an invalid character or an unsupported base.
  * It sets errno to ERANGE when the target datatype is too small.
  *
- * The comma character is treated as group separator and ignored during parsing.
+ * The comma character is treated as a group separator and ignored during parsing.
  * If you want to choose the set of group separators, use the @c _lc variant of this function (e.g. cx_strtoz_lc()).
  *
  * @param str the string to convert
@@ -1979,7 +1979,7 @@
  * In that case the function sets errno to EINVAL when the reason is an invalid character or an unsupported base.
  * It sets errno to ERANGE when the target datatype is too small.
  *
- * The comma character is treated as group separator and ignored during parsing.
+ * The comma character is treated as a group separator and ignored during parsing.
  * If you want to choose the set of group separators, use the @c _lc variant of this function (e.g. cx_strtoz_lc()).
  *
  * @param str the string to convert
@@ -1997,7 +1997,7 @@
  * In that case the function sets errno to EINVAL when the reason is an invalid character or an unsupported base.
  * It sets errno to ERANGE when the target datatype is too small.
  *
- * The comma character is treated as group separator and ignored during parsing.
+ * The comma character is treated as a group separator and ignored during parsing.
  * If you want to choose the set of group separators, use the @c _lc variant of this function (e.g. cx_strtoz_lc()).
  *
  * @param str the string to convert
@@ -2015,7 +2015,7 @@
  * In that case the function sets errno to EINVAL when the reason is an invalid character or an unsupported base.
  * It sets errno to ERANGE when the target datatype is too small.
  *
- * The comma character is treated as group separator and ignored during parsing.
+ * The comma character is treated as a group separator and ignored during parsing.
  * If you want to choose the set of group separators, use the @c _lc variant of this function (e.g. cx_strtoz_lc()).
  *
  * @param str the string to convert
@@ -2033,7 +2033,7 @@
  * In that case the function sets errno to EINVAL when the reason is an invalid character or an unsupported base.
  * It sets errno to ERANGE when the target datatype is too small.
  *
- * The comma character is treated as group separator and ignored during parsing.
+ * The comma character is treated as a group separator and ignored during parsing.
  * If you want to choose the set of group separators, use the @c _lc variant of this function (e.g. cx_strtoz_lc()).
  *
  * @param str the string to convert
@@ -2051,7 +2051,7 @@
  * In that case the function sets errno to EINVAL when the reason is an invalid character or an unsupported base.
  * It sets errno to ERANGE when the target datatype is too small.
  *
- * The comma character is treated as group separator and ignored during parsing.
+ * The comma character is treated as a group separator and ignored during parsing.
  * If you want to choose the set of group separators, use the @c _lc variant of this function (e.g. cx_strtoz_lc()).
  *
  * @param str the string to convert
@@ -2069,7 +2069,7 @@
  * In that case the function sets errno to EINVAL when the reason is an invalid character or an unsupported base.
  * It sets errno to ERANGE when the target datatype is too small.
  *
- * The comma character is treated as group separator and ignored during parsing.
+ * The comma character is treated as a group separator and ignored during parsing.
  * If you want to choose the set of group separators, use the @c _lc variant of this function (e.g. cx_strtoz_lc()).
  *
  * @param str the string to convert
@@ -2087,7 +2087,7 @@
  * In that case the function sets errno to EINVAL when the reason is an invalid character or an unsupported base.
  * It sets errno to ERANGE when the target datatype is too small.
  *
- * The comma character is treated as group separator and ignored during parsing.
+ * The comma character is treated as a group separator and ignored during parsing.
  * If you want to choose the set of group separators, use the @c _lc variant of this function (e.g. cx_strtoz_lc()).
  *
  * @param str the string to convert
@@ -2105,7 +2105,7 @@
  * In that case the function sets errno to EINVAL when the reason is an invalid character or an unsupported base.
  * It sets errno to ERANGE when the target datatype is too small.
  *
- * The comma character is treated as group separator and ignored during parsing.
+ * The comma character is treated as a group separator and ignored during parsing.
  * If you want to choose the set of group separators, use the @c _lc variant of this function (e.g. cx_strtoz_lc()).
  *
  * @param str the string to convert
@@ -2117,7 +2117,7 @@
 #define cx_strtou64(str, output, base) cx_strtou64_lc_(cx_strcast(str), output, base, ",")
 
 /**
- * Converts a string to a single precision floating point number.
+ * Converts a string to a single precision floating-point number.
  *
  * The function returns non-zero when conversion is not possible.
  * In that case the function sets errno to EINVAL when the reason is an invalid character.
@@ -2126,14 +2126,14 @@
  * @param str the string to convert
  * @param output a pointer to the float variable where the result shall be stored
  * @param decsep the decimal separator
- * @param groupsep each character in this string is treated as group separator and ignored during conversion
+ * @param groupsep each character in this string is treated as a group separator and ignored during conversion
  * @retval zero success
  * @retval non-zero conversion was not possible
  */
 #define cx_strtof_lc(str, output, decsep, groupsep) cx_strtof_lc_(cx_strcast(str), output, decsep, groupsep)
 
 /**
- * Converts a string to a double precision floating point number.
+ * Converts a string to a double precision floating-point number.
  *
  * The function returns non-zero when conversion is not possible.
  * In that case the function sets errno to EINVAL when the reason is an invalid character.
@@ -2141,21 +2141,21 @@
  * @param str the string to convert
  * @param output a pointer to the double variable where the result shall be stored
  * @param decsep the decimal separator
- * @param groupsep each character in this string is treated as group separator and ignored during conversion
+ * @param groupsep each character in this string is treated as a group separator and ignored during conversion
  * @retval zero success
  * @retval non-zero conversion was not possible
  */
 #define cx_strtod_lc(str, output, decsep, groupsep) cx_strtod_lc_(cx_strcast(str), output, decsep, groupsep)
 
 /**
- * Converts a string to a single precision floating point number.
+ * Converts a string to a single precision floating-point number.
  *
  * The function returns non-zero when conversion is not possible.
  * In that case the function sets errno to EINVAL when the reason is an invalid character.
  * It sets errno to ERANGE when the necessary representation would exceed the limits defined in libc's float.h.
  *
  * The decimal separator is assumed to be a dot character.
- * The comma character is treated as group separator and ignored during parsing.
+ * The comma character is treated as a group separator and ignored during parsing.
  * If you want to choose a different format, use cx_strtof_lc().
  *
  * @param str the string to convert
@@ -2166,13 +2166,13 @@
 #define cx_strtof(str, output) cx_strtof_lc_(cx_strcast(str), output, '.', ",")
 
 /**
- * Converts a string to a double precision floating point number.
+ * Converts a string to a double precision floating-point number.
  *
  * The function returns non-zero when conversion is not possible.
  * In that case the function sets errno to EINVAL when the reason is an invalid character.
  *
  * The decimal separator is assumed to be a dot character.
- * The comma character is treated as group separator and ignored during parsing.
+ * The comma character is treated as a group separator and ignored during parsing.
  * If you want to choose a different format, use cx_strtof_lc().
  *
  * @param str the string to convert