strmtrim - replace multiple white spaces with single blanks within string

       Lars Wirzenius (lars.wirzenius@helsinki.fi)

Publib                                        C Programmer's Manual                               STRMTRIM(3pub)

strmtrim  will replace every run of whitespace characters (as defined by isspace(3)) with a single blank.
       It will not touch leading and trailing whitespace (use strltrim(3) and strrtrim(3) for those).

       strmtrim - replace multiple white spaces with single blanks within string

strmtrim will return the value of its argument.

publib(3), strtrim(3), strltrim(3), strrtrim(3)

       #include <publib.h>
       char *strmtrim(char *str);