soelim(1) — Linux manual page

Name | Synopsis | Description | Options | See also | COLOPHON

soelim(1)                General Commands Manual               soelim(1)

Name         top

       soelim - recursively interpolate source requests in roff files

Synopsis         top

       soelim [-Crt] [-I dir] [file ...]

       soelim --help

       soelim -v
       soelim --version

Description         top

       GNU soelim is a preprocessor for the groff(7) document formatting
       system.  soelim works as a filter to eliminate source requests in
       roff(7) input files; that is, it replaces lines of the form “.so
       macro-file” within each text input-file with the contents of
       macro-file, recursively.  By default, it writes .lf requests as
       well to record the name and line number of each input-file and
       macro-file, so that any diagnostics produced by later processing
       can be accurately traced to the original input.  Options allow
       this information to be suppressed (-r) or supplied in TeX
       comments instead (-t).  In the absence of input-file arguments,
       soelim reads the standard input stream.  Output is written to the
       standard output stream.

       To embed a backslash “\” in the name of a macro-file, write “\\”
       or “\e”.  To embed a space, write “\ ” (backslash followed by a
       space).  Any other escape sequence in macro-file, including
       “\[rs]”, prevents soelim from replacing the source request.

       The dot must be at the beginning of a line and must be followed
       by “so” without intervening spaces or tabs for soelim to handle
       it.  This convention allows source requests to be “protected”
       from processing by soelim, for instance as part of macro
       definitions or .if requests.

       There must also be at least one space between “so” and its macro-
       file argument.  The -C option overrides this requirement.

       The foregoing is the limit of soelim's understanding of roff
       languages; it does not, for example, replace the input line
              .if 1 .so otherfile
       with the contents of otherfile.  With its -r option, therefore,
       soelim can be used to process text files in general, to flatten a
       tree of input documents.

       soelim was designed to handle situations where the target of a
       roff source request requires a preprocessor such as eqn(1),
       pic(1), refer(1), or tbl(1).  The usual processing sequence of
       groff(1) is as follows.

                 input        sourced
                 file          file
                   ⎪             ⎪
                   ↓             ↓
               preprocessor ⎯→ troff ⎯→ postprocessor

       That is, files sourced with .so are normally read only by troff
       (the actual formatter).  soelim is not required for troff to
       source files.

       If a file to be sourced should also be preprocessed, it must
       already be read before the input file passes through the
       preprocessor.  soelim, normally invoked via groff's -s option,
       handles this.

                 soelim ⎯→ preprocessor ⎯→ troff ⎯→ postprocessor
                   ↑                                     ⎪
                   ⎪                                     ↓
                sourced                               output
                 file                                  file

Options         top

       --help displays a usage message, while -v and --version show
       version information; all exit afterward.

       -C     Recognize .so even when followed by a character other than
              space or newline.

       -I dir Add the directory dir to the search path for macro files
              (both those on the command line and those named in .so
              requests).  The search path is initialized with the
              current directory.  This option may be specified more than
              once; the directories are then searched in the order
              specified (but before the current directory).  If you want
              to search the current directory before other directories,
              add “-I .” at the appropriate place.  No directory search
              is performed for files with an absolute file name.

       -r     Write files “raw”; do not add .lf requests.

       -t     Emit TeX comment lines starting with “%” indicating the
              current file and line number, rather than .lf requests for
              the same purpose.

       If both -r and -t are given, the last one specified controls.

See also         top


COLOPHON         top

       This page is part of the groff (GNU troff) project.  Information
       about the project can be found at 
       ⟨⟩.  If you have a bug report
       for this manual page, see ⟨⟩.
       This page was obtained from the project's upstream Git repository
       ⟨⟩ on 2021-08-27.  (At
       that time, the date of the most recent commit that was found in
       the repository was 2021-08-23.)  If you discover any rendering
       problems in this HTML version of the page, or you believe there
       is a better or more up-to-date source for the page, or you have
       corrections or improvements to the information in this COLOPHON
       (which is not part of the original manual page), send a mail to

groff 1.23.0.rc1.654-4e1db-dir1t9yAugust 2021                    soelim(1)