Fix typos

lib/utils/mu-command-parser.hh

@@ -38,12 +38,13 @@ namespace Command {
 /// Commands are s-expressions with the follow properties:
 
 /// 1) a command is a list with a command-name as its first argument
-/// 2) the rest of the parameters are pairs of colon-prefixed symbol and a value of some type
-///      (ie. 'keyword arguments')
+/// 2) the rest of the parameters are pairs of colon-prefixed symbol and a value of some
+///    type (ie. 'keyword arguments')
 /// 3) each command is described by its CommandInfo structure, which defines the type
 /// 4) calls to the command must include all required parameters
 /// 5) all parameters must be of the specified type; however the symbol 'nil' is allowed
-///    for specify a non-required parameter to be absent; this is for convience on the call side.
+///    for specify a non-required parameter to be absent; this is for convenience on the
+///    call side.
 
 
 /// Information about a function argument

lib/utils/mu-util.h

@@ -51,7 +51,7 @@ char* mu_util_dir_expand (const char* path)
 
 /**
  * guess the maildir; first try $MAILDIR; if it is unset or
- * non-existant, try ~/Maildir if both fail, return NULL
+ * non-existent, try ~/Maildir if both fail, return NULL
  *
  * @return full path of the guessed Maildir, or NULL; must be freed (gfree)
  */

lib/utils/mu-utils.hh

@@ -103,7 +103,7 @@ std::string format (const char *frm, va_list args) __attribute__((format(printf,
  * @param first whether to fill out incomplete dates to the start or the end;
  * ie. either 1972 -> 197201010000 or 1972 -> 197212312359
  *
- * @return the corresponding time_t expressed as a strng
+ * @return the corresponding time_t expressed as a string
  */
 std::string date_to_time_t_string (const std::string& date, bool first);