# tic 1m 2023-12-30 ncurses 6.4 User commands

    tic(1m)                          User commands                         tic(1m)

## NAME

           tic - compile terminal descriptions for terminfo or termcap

## SYNOPSIS

           tic  [-01acCDfgGIKLNqrstTUVWx] [-e terminal-type-list] [-o dir] [-Q[n]]
           [-R subset] [-v[n]] [-w[n]] file

## DESCRIPTION

           The tic command translates a terminfo  file  from  source  format  into
           compiled  format.   The  compiled  format is necessary for use with the
           library routines in ncurses(3x).

           As described in term(5), the database may be either  a  directory  tree
           (one  file  per  terminal  entry)  or a hashed database (one record per
           entry).  The tic command writes only one type of  entry,  depending  on
           how it was built:

           o   For    directory    trees,    the    top-level   directory,   e.g.,
               /usr/share/terminfo, specifies the location of the database.

           o   For hashed databases, a filename is needed.  If the given  file  is
               not  found  by  that  name,  but  can be found by adding the suffix
               ".db", then that is used.

               The default name for the hashed database is the same as the default
               directory name (only adding a ".db" suffix).

           In  either  case  (directory  or  hashed database), tic will create the
           container if it does not exist.  For a directory,  this  would  be  the
           "terminfo" leaf, versus a "terminfo.db" file.

           The  results  are  normally  placed  in  the  system  terminfo database
           /usr/share/terminfo.  The compiled terminal description can  be  placed
           in a different terminfo database.  There are two ways to achieve this:

           o   First,  you  may override the system default either by using the -o
               option,  or  by  setting  the  variable  TERMINFO  in  your   shell
               environment to a valid database location.

           o   Secondly,  if  tic  cannot  write  in  /usr/share/terminfo  or  the
               location specified using your TERMINFO variable, it looks  for  the
               directory  $HOME/.terminfo (or hashed database $HOME/.terminfo.db);
               if that location exists, the entry is placed there.

           Libraries  that  read  terminfo  entries  are  expected  to  check   in
           succession

           o   a location specified with the TERMINFO environment variable,

           o   $HOME/.terminfo,

           o   directories listed in the TERMINFO_DIRS environment variable,

           o   a compiled-in list of directories (/usr/share/terminfo), and

           o   the system terminfo database (/usr/share/terminfo).

           The  Fetching  Compiled  Descriptions section in the terminfo(5) manual
           goes into further detail.

### Aliases

           This is the same program as infotocap and captoinfo; usually those  are
           linked to, or copied from this program:

           o   When invoked as infotocap, tic sets the -I option.

           o   When invoked as captoinfo, tic sets the -C option.

## OPTIONS

           -0     restricts the output to a single line

           -1     restricts the output to a single column

           -a     tells  tic  to  retain  commented-out  capabilities  rather than
                  discarding them.  Capabilities are commented by  prefixing  them
                  with  a  period.  This sets the -x option, because it treats the
                  commented-out entries as user-defined names.  If the  source  is
                  termcap,  accept  the  2-character  names required by version 6.
                  Otherwise these are ignored.

           -C     Force source translation to termcap format.  Note: this  differs
                  from  the  -C  option  of infocmp(1m) in that it does not merely
                  translate capability names, but also translates terminfo strings
                  to  termcap  format.  Capabilities that are not translatable are
                  left in the entry under their terminfo names but  commented  out
                  with  two  preceding  dots.  The actual format used incorporates
                  some improvements for escaped characters from  terminfo  format.
                  For a stricter BSD-compatible translation, add the -K option.

                  If  this  is  combined  with  -c, tic makes additional checks to
                  report cases where the terminfo values  do  not  have  an  exact
                  equivalent in termcap form.  For example:

                  o   sgr  usually  will  not  convert,  because termcap lacks the
                      ability to work with more than two parameters,  and  because
                      termcap  lacks many of the arithmetic/logical operators used
                      in terminfo.

                  o   capabilities with more than one delay or with delays  before
                      the end of the string will not convert completely.

           -c     tells  tic  to  only  check  file  for  errors, including syntax
                  problems and bad use-links.  If you specify -C  (-I)  with  this
                  option,  the code will print warnings about entries which, after
                  use resolution, are more than 1023 (4096) bytes long.  Due to  a
                  fixed buffer length in older termcap libraries, as well as buggy
                  checking for the  buffer  length  (and  a  documented  limit  in
                  terminfo),  these  entries  may  cause  core  dumps  with  other
                  implementations.

                  tic  checks  string  capabilities  to  ensure  that  those  with
                  parameters  will  be valid expressions.  It does this check only
                  for the predefined string capabilities; those which are  defined
                  with the -x option are ignored.

           -D     tells  tic  to print the database locations that it knows about,
                  and exit.  The first location shown is the one to which it would
                  write  compiled  terminal  descriptions.   If tic is not able to
                  find  a  writable  database  location  according  to  the  rules
                  summarized  above,  it  will print a diagnostic and exit with an
                  error rather than printing a list of database locations.

           -e list
                  Limit writes and translations to  the  comma-separated  list  of
                  terminal  types.  If any name or alias of a terminal matches one
                  of the  names  in  the  list,  the  entry  will  be  written  or
                  translated as normal.  Otherwise no output will be generated for
                  it.  The option value is interpreted as a  file  containing  the
                  list  if  it  contains  a  '/'.  (Note: depending on how tic was
                  compiled, this option may require -I or -C.)

           -f     Display    complex    terminfo     strings     which     contain
                  if/then/else/endif expressions indented for readability.

           -G     Display  constant  literals  in  decimal  form rather than their
                  character equivalents.

           -g     Display constant character literals in quoted form  rather  than
                  their decimal equivalents.

           -I     Force source translation to terminfo format.

           -K     Suppress some longstanding ncurses extensions to termcap format,
                  e.g., "\s" for space.

           -L     Force source translation to terminfo format  using  the  long  C
                  variable names listed in <term.h>

           -N     Disable smart defaults.  Normally, when translating from termcap
                  to terminfo, the compiler makes a number  of  assumptions  about
                  the    defaults    of    string    capabilities   reset1_string,
                  carriage_return, cursor_left, cursor_down, scroll_forward,  tab,
                  newline, key_backspace, key_left, and key_down, then attempts to
                  use obsolete termcap capabilities to deduce correct values.   It
                  also normally suppresses output of obsolete termcap capabilities
                  such as bs.  This option forces a more literal translation  that
                  also preserves the obsolete capabilities.

           -odir  Write  compiled  entries  to given database location.  Overrides
                  the TERMINFO environment variable.

           -Qn    Rather than show source in terminfo  (text)  format,  print  the
                  compiled   (binary)   format  in  hexadecimal  or  base64  form,
                  depending on the option's value:

                   1  hexadecimal

                   2  base64

                   3  hexadecimal and base64

           -q     Suppress  comments  and  blank  lines  when  showing  translated
                  source.

           -Rsubset
                  Restrict  output to a given subset.  This option is for use with
                  archaic versions of terminfo like those on SVr1, Ultrix, or  HP-
                  UX that do not support the full set of SVR4/XSI Curses terminfo;
                  and outright broken ports like  AIX  3.x  that  have  their  own
                  extensions incompatible with SVr4/XSI.

                  Available subsets are
                  "SVr1", "Ultrix", "HP", "BSD", and "AIX"

                  See terminfo(5) for details.

           -r     Force   entry   resolution   (so   there  are  no  remaining  tc
                  capabilities) even when doing  translation  to  termcap  format.
                  This  may  be  needed  if you are preparing a termcap file for a
                  termcap library (such as GNU termcap through version 1.3 or  BSD
                  termcap  through  4.3BSD)  that  does  not  handle  multiple  tc
                  capabilities per entry.

           -s     Summarize the compile by  showing  the  database  location  into
                  which  entries  are written, and the number of entries which are
                  compiled.

           -T     eliminates size-restrictions on the  generated  text.   This  is
                  mainly  useful  for  testing  and  analysis,  since the compiled
                  descriptions are limited  (e.g.,  1023  for  termcap,  4096  for
                  terminfo).

           -t     tells  tic to discard commented-out capabilities.  Normally when
                  translating   from   terminfo   to    termcap,    untranslatable
                  capabilities are commented-out.

           -U   tells  tic  to  not post-process the data after parsing the source
                file.  Normally, it infers data which is commonly missing in older
                terminfo data, or in termcaps.

           -V   reports the version of ncurses which was used in this program, and
                exits.

           -vn  specifies that (verbose) output be written to standard error trace
                information showing tic's progress.

                The  optional  parameter  n  is  a  number from 1 to 9, inclusive,
                indicating the desired level of detail of information.

                o   If ncurses is built  without  tracing  support,  the  optional
                    parameter is ignored.

                o   If n is omitted, the default level is 1.

                o   If  n  is specified and greater than 1, the level of detail is
                    increased,  and  the   output   is   written   (with   tracing
                    information) to the "trace" file.

                The debug flag levels are as follows:

                1   Names of files created and linked

                2   Information related to the "use" facility

                3   Statistics from the hashing algorithm

                4   Details of extended capabilities

                5   (unused)

                6   (unused)

                7   Entries into the string-table

                8   List of tokens encountered by scanner

                9   All values computed in construction of the hash table

           -W   By  itself,  the  -w  option  will  not  force  long strings to be
                wrapped.  Use the -W option to do this.

                If you specify both -f and -W options, the latter is ignored  when
                -f has already split the line.

           -wn  specifies the width of the output.  The parameter is optional.  If
                it is omitted, it defaults to 60.

           -x   Treat unknown capabilities  as  user-defined  (see  user_caps(5)).
                That  is,  if  you  supply  a  capability  name which tic does not
                recognize, it will infer its type (Boolean, number or string) from
                the  syntax  and  make  an  extended  table entry for that.  User-
                defined capability strings whose name begins with "k" are  treated
                as function keys.

### Parameters

           file   contains  one  or  more terminfo terminal descriptions in source
                  format  [see  terminfo(5)].   Each  description  in   the   file
                  describes the capabilities of a particular terminal.

                  If  file  is "-", then the data is read from the standard input.
                  The file parameter may also be the path of a character-device.

### Processing

           All but one of the capabilities recognized by  tic  are  documented  in
           terminfo(5).  The exception is the use capability.

           When a use=entry-name field is discovered in a terminal entry currently
           being compiled, tic reads in the  binary  from  /usr/share/terminfo  to
           complete  the  entry.   (Entries  created from file will be used first.
           tic duplicates the capabilities in entry-name for  the  current  entry,
           with the exception of those capabilities that explicitly are defined in
           the current entry.

           When an entry, e.g., entry_name_1, contains a  use=entry_name_2  field,
           any   canceled   capabilities  in  entry_name_2  must  also  appear  in
           entry_name_1 before use= for  these  capabilities  to  be  canceled  in
           entry_name_1.

           Total  compiled  entries cannot exceed 4096 bytes in the legacy storage
           format, or 32768 using the extended  number  format.   The  name  field
           cannot  exceed  512  bytes.  Terminal names exceeding the maximum alias
           length (32 characters on systems with  long  filenames,  14  characters
           otherwise)  will be truncated to the maximum alias length and a warning
           message will be printed.

## FILES

           /usr/share/terminfo
                  compiled terminal description database

## NOTES

           There is  some  evidence  that  historic  tic  implementations  treated
           description  fields with no whitespace in them as additional aliases or
           short names.  This tic  does  not  do  that,  but  it  does  warn  when
           description fields may be treated that way and check them for dangerous
           characters.

## EXTENSIONS

           Unlike the SVr4 tic command, this implementation can  actually  compile
           termcap  sources.   In fact, entries in terminfo and termcap syntax can
           be mixed in a single source file.  See  terminfo(5)  for  the  list  of
           termcap names taken to be equivalent to terminfo names.

           The  SVr4  manual  pages  are not clear on the resolution rules for use
           capabilities.   This  implementation  of  tic  will  find  use  targets
           anywhere  in  the  source  file, or anywhere in the file tree rooted at
           TERMINFO (if TERMINFO is defined), or  in  the  user's  $HOME/.terminfo
           database  (if  it  exists),  or (finally) anywhere in the system's file
           tree of compiled entries.

           The error messages from this tic have the same format as  GNU  C  error
           messages, and can be parsed by GNU Emacs's compile facility.

           Aside from -c and -v, options are not portable:

           o   Most of tic's options are not supported by SVr4 tic:

               -0 -1 -C -G -I -N -R -T -V -a -e -f -g -o -r -s -t -x

           o   The NetBSD tic supports a few of the ncurses options

               -a -o -x

               and  adds  -S  (a feature which does the same thing as infocmp's -e
               and -E options).

           The SVr4 -c mode does not report bad "use=" links.

           System V does  not  compile  entries  to  or  read  entries  from  your
           $HOME/.terminfo database unless TERMINFO is explicitly set to it.

## PORTABILITY

           X/Open  Curses, Issue 7 (2009) provides a brief description of tic.  It
           lists one option: -c.  The omission of -v is  unexpected.   The  change
           history  states  that the description is derived from Tru64.  According
           to its manual pages, that system also supported the -v option.

           Shortly after Issue 7 was released,  Tru64  was  discontinued.   As  of
           2019,  the  surviving  implementations  of tic are SVr4 (AIX, HP-UX and
           Solaris), ncurses and NetBSD curses.  The SVr4 tic programs all support
           the  -v option.  The NetBSD tic program follows X/Open's documentation,
           omitting the -v option.

           The X/Open rationale states  that  some  implementations  of  tic  read
           terminal  descriptions from the standard input if the file parameter is
           omitted.  None of these implementations do that.  Further, it  comments
           that  some  may  choose  to  read  from  "./terminfo.src"  but  that is
           obsolescent behavior from SVr2, and is not (for example)  a  documented
           feature of SVr3.

## HISTORY

           System  V  Release  2  provided  a  tic  utility.  It accepted a single
           option: -v (optionally  followed  by  a  number).   According  to  Ross
           Ridge's comment in mytinfo, this version of tic was unable to represent
           cancelled capabilities.

           System V Release 3 provided a different tic utility, written  by  Pavel
           Curtis,  (originally named "compile" in pcurses).  This added an option
           -c to check the file for errors, with the caveat that errors in  "use="
           links  would  not  be  reported.   System  V Release 3 documented a few
           warning messages which did not appear in pcurses.   While  the  program
           itself  was  changed  little  as  development  continued  with System V
           Release 4, the table of capabilities grew from  180  (pcurses)  to  464
           (Solaris).

           In  early  development of ncurses (1993), Zeyd Ben-Halim used the table
           from mytinfo to extend the  pcurses  table  to  469  capabilities  (456
           matched  SVr4, 8 were only in SVr4, 13 were not in SVr4).  Of those 13,
           11 were ultimately discarded (perhaps to  match  the  draft  of  X/Open
           Curses).   The exceptions were memory_lock_above and memory_unlock (see
           user_caps(5)).

           Eric Raymond incorporated parts of mytinfo into  ncurses  to  implement
           the  termcap-to-terminfo  source conversion, and extended that to begin
           development of the corresponding terminfo-to-termcap source conversion,
           Thomas  Dickey  completed  that  development over the course of several
           years.

           In 1999, Thomas Dickey added the  -x  option  to  support  user-defined
           capabilities.

           In  2010,  Roy  Marples provided a tic program and terminfo library for
           NetBSD.  That implementation  adapts  several  features  from  ncurses,
           including tic's -x option.

           The  -c  option  tells tic to check for problems in the terminfo source
           file.  Continued development provides additional checks:

           o   pcurses had 8 warnings

           o   ncurses in 1996 had 16 warnings

           o   Solaris (SVr4) curses has 28 warnings

           o   NetBSD tic in 2019 has 19 warnings.

           o   ncurses in 2019 has 96 warnings

           The checking done in ncurses' tic helps with the conversion to termcap,
           as well as pointing out errors and inconsistencies.  It is also used to
           ensure consistency with the user-defined capabilities.  There  are  527
           distinct  capabilities  in ncurses' terminal database; 128 of those are
           user-defined.

## AUTHORS

           Eric S. Raymond <esr@snark.thyrsus.com> and
           Thomas E. Dickey <dickey@invisible-island.net>

## SEE ALSO

           captoinfo(1m),   infocmp(1m),   infotocap(1m),   toe(1m),   curses(3x),
           term(5), terminfo(5), user_caps(5)

    ncurses 6.4                       2023-12-30                           tic(1m)