strtabify - convert runs of spaces and tabs to tabs

       Lars Wirzenius (lars.wirzenius@helsinki.fi)

Publib                                        C Programmer's Manual                              STRTABIFY(3pub)

strtabify  will converts spaces and tabs to tabs and spaces (using the minimal amount of spaces required,
       possibly none), while preserving indentation.  Tab positions are set every tabsize columns.

       strtabify - convert runs of spaces and tabs to tabs

strtabify will return its first argument.

publib(3), struntabify(3)

       #include <publib.h>
       char *strtabify(char *str, size_t tabsize);