.CD "unexpand \(en convert spaces to tabs"
.SX "unexpand\fR [\fB\(ena\fR]
.FL "\(ena" "All spaces are unexpanded"
.EY "unexpand oldfile >newfile" "Convert leading spaces to tabs"
.PP
\fIUnexpand\fR replaces spaces in the named files with tabs.
If no files are listed, \fIstdin\fR is given.
The \fB\(ena\fR flag is used to force all sequences of spaces to be
expanded, instead of just leading spaces (the default).