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Convert spaces to tabs (POSIX)
unexpand [-a] [-t tabsize] [file...]
Neutrino
- -a
- In addition to the default behavior of replacing leading
spaces, translate two to eight consecutive
spaces immediately preceding a tab stop into a
tab. A tab stop is a column position that's a
multiple of eight column positions.
- -t tabsize
- (QNX Neutrino extension) Set the tab stops tabsize columns apart (default
is 8). The tabsize argument consists of a single
positive decimal integer.
- file
- The pathname of a text file to be used as input.
The unexpand utility copies files or the standard input to the
standard output, translating each group of eight spaces
at the beginning of a line into a tab character. Any
backspace characters in the input are copied to the
output, and each causes the column position count for tab calculations
to be decremented; the count is never decremented below zero.
For the file sourcecode, convert every run of eight spaces
at the beginning of a line into a single tab:
unexpand sourcecode
Convert every run of two to eight spaces that precedes a tab stop
into a single tab:
unexpand -a sourcecode
Convert every run of two to four spaces that precedes a tab
stop into a single tab:
unexpand -a -t4 sourcecode
- 0
- Successful completion.
- >0
- An error occurred.
expand
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