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.\" Copyright (c) 2000, 2001, 2002, 2003, 2004, 2012 by Martin C. Shepherd
.\"
.\" All rights reserved.
.\"
.\" Permission is hereby granted, free of charge, to any person obtaining a
.\" copy of this software and associated documentation files (the
.\" "Software"), to deal in the Software without restriction, including
.\" without limitation the rights to use, copy, modify, merge, publish,
.\" distribute, and/or sell copies of the Software, and to permit persons
.\" to whom the Software is furnished to do so, provided that the above
.\" copyright notice(s) and this permission notice appear in all copies of
.\" the Software and that both the above copyright notice(s) and this
.\" permission notice appear in supporting documentation.
.\"
.\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
.\" OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
.\" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
.\" OF THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
.\" HOLDERS INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL
.\" INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING
.\" FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
.\" NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
.\" WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.\"
.\" Except as contained in this notice, the name of a copyright holder
.\" shall not be used in advertising or otherwise to promote the sale, use
.\" or other dealings in this Software without prior written authorization
.\" of the copyright holder.
.TH libtecla @LIBR_MANEXT@
.SH NAME
libtecla - An interactive command-line input library.
.SH SYNOPSIS
.nf
@CC@ ... -ltecla -lcurses
.fi
.SH DESCRIPTION
The \f3tecla\f1 library provides programs with interactive command
line editing facilities, similar to those of the unix \f3tcsh\f1
shell. In addition to simple command-line editing, it supports recall
of previously entered command lines, TAB completion of file names or
other tokens, and in-line wild-card expansion of filenames. The
internal functions which perform file-name completion and wild-card
expansion are also available externally for optional use by the
calling program.
.sp
The various parts of the library are documented in the following man
pages:
.nf
tecla(@MISC_MANEXT@) - Use level documentation of the
command-line editing facilities
provided by \f3gl_get_line()\f1.
gl_get_line(@FUNC_MANEXT@) - The interactive line-input module.
gl_io_mode(@FUNC_MANEXT@) - How to use \f3gl_get_line()\f1 in an
incremental, non-blocking fashion.
cpl_complete_word(@FUNC_MANEXT@) - The word completion module.
ef_expand_file(@FUNC_MANEXT@) - The filename expansion module.
pca_lookup_file(@FUNC_MANEXT@) - A directory-list based filename
lookup and completion module.
.fi
In addition there is one optional application distributed
with the library:
.nf
enhance(@PROG_MANEXT@) - Add command-line editing to third
party applications.
.fi
.SH THREAD SAFETY
If the library is compiled with -D_POSIX_C_SOURCE=199506L, reentrant
versions of as many functions as possible are used. This includes
using getpwuid_r() and getpwnam_r() instead of getpwuid() and
getpwnam() when looking up the home directories of specific users in
the password file (for ~user/ expansion), and readdir_r() instead of
readdir() for reading directory entries when doing filename
completion. The reentrant version of the library is usually called
libtecla_r.a instead of libtecla.a, so if only the latter is
available, it probably isn't the correct version to link with
threaded programs.
Reentrant functions for iterating through the password file aren't
available, so when the library is compiled to be reentrant, TAB
completion of incomplete usernames in \f3~username/\f1 expressions is
disabled. This doesn't disable expansion of complete \f3~username\f1
expressions, which can be done reentrantly, or expansion of the parts
of filenames that follow them, so this doesn't remove much
functionality.
The terminfo functions setupterm(), tigetstr(), tigetnum() and tputs()
also aren't reentrant, but very few programs will want to interact
with multiple terminals, so this shouldn't prevent this library from
being used in threaded programs.
.SH LIBRARY VERSION NUMBER
The version number of the library can be queried using the following
function.
.sp
.nf
void libtecla_version(int *major, int *minor, int *micro);
.fi
.sp
On return, this function records the three components of the libtecla
version number in \f3*major\f1, \f3*minor\f1, \f3*micro\f1. The formal
meaning of the three components is as follows.
.sp
.nf
major - Incrementing this number implies that a change has
been made to the library's public interface, which
makes it binary incompatible with programs that
were linked with previous shared versions of the
tecla library.
minor - This number is incremented by one whenever
additional functionality, such as new functions or
modules, are added to the library.
micro - This is incremented whenever modifications to the
library are made which make no changes to the
public interface, but which fix bugs and/or improve
the behind-the-scenes implementation.
.fi
.sp
.SH TRIVIA
In Spanish, a "tecla" is the key of a keyboard. Since this library
centers on keyboard input, and given that I wrote much of the library
while working in Chile, this seemed like a suitable name.
.SH FILES
.nf
libtecla.a - The tecla library.
libtecla.h - The tecla header file.
~/.teclarc - The tecla personal customization file.
.fi
.SH SEE ALSO
.nf
gl_get_line(@FUNC_MANEXT@), tecla(@MISC_MANEXT@), gl_io_mode(@FUNC_MANEXT@), ef_expand_file(@FUNC_MANEXT@),
cpl_complete_word(@FUNC_MANEXT@), pca_lookup_file(@FUNC_MANEXT@), enhance(@PROG_MANEXT@)
.fi
.SH AUTHOR
Martin Shepherd (mcs@astro.caltech.edu)
.SH ACKNOWLEDGMENTS
.nf
Markus Gyger - Lots of assistance, including help with
shared libraries, configuration information,
particularly for Solaris; modifications to
support C++ compilers, improvements for ksh
users, faster cursor motion, output
buffering, and changes to make gl_get_line()
8-bit clean.
Mike MacFaden - Suggestions, feedback and testing that led
to many of the major new functions that were
added in version 1.4.0.
Tim Eliseo - Many vi-mode bindings and fixes.
.fi
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