diff options
Diffstat (limited to 'libtecla-1.6.1/html/enhance.html')
| -rw-r--r-- | libtecla-1.6.1/html/enhance.html | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/libtecla-1.6.1/html/enhance.html b/libtecla-1.6.1/html/enhance.html new file mode 100644 index 0000000..62b4e2f --- /dev/null +++ b/libtecla-1.6.1/html/enhance.html @@ -0,0 +1,75 @@ +<head> +<title>Manual Page</title> +</head> +<body> +<pre> +<a href="enhance.html"><b>enhance</b></a> <a href="enhance.html"><b>enhance</b></a> + + + +</pre><h2>NAME</h2><pre> + enhance - A program that adds command-line editing to third party pro- + grams. + +</pre><h2>SYNOPSIS</h2><pre> + enhance command [ argument ... ] + + +</pre><h2>DESCRIPTION</h2><pre> + The enhance program provides enhanced command-line editing facilities + to users of third party applications, to which one doesn't have any + source code. It does this by placing a pseudo-terminal between the + application and the real terminal. It uses the tecla command-line edit- + ing library to read input from the real terminal, then forwards each + just completed input line to the application via the pseudo-terminal. + All output from the application is forwarded back unchanged to the real + terminal. + + Whenever the application stops generating output for more than a tenth + of a second, the enhance program treats the latest incomplete output + line as the prompt, and redisplays any incompleted input line that the + user has typed after it. Note that the small delay, which is impercep- + tible to the user, isn't necessary for correct operation of the pro- + gram. It is just an optimization, designed to stop the input line from + being redisplayed so often that it slows down output. + + Note that the user-level command-line editing facilities provided by + the Tecla library are documented in the <a href="tecla.html"><b>tecla</b></a> man page + + +</pre><h2>DEFICIENCIES</h2><pre> + The one major problem that hasn't been solved yet, is how to deal with + applications that change whether typed input is echo'd by their con- + trolling terminal. For example, programs that ask for a password, such + as ftp and telnet, temporarily tell their controlling terminal not to + echo what the user types. Since this request goes to the application + side of the psuedo terminal, the enhance program has no way of knowing + that this has happened, and continues to echo typed input to its con- + trolling terminal, while the user types their password. + + Furthermore, before executing the host application, the enhance program + initially sets the pseudo terminal to noecho mode, so that everything + that it sends to the program doesn't get redundantly echoed. If a pro- + gram that switches to noecho mode explicitly restores echoing after- + wards, rather than restoring the terminal modes that were previously in + force, then subsequently, every time that you enter a new input line, a + duplicate copy will be displayed on the next line. + + +</pre><h2>FILES</h2><pre> + libtecla.a - The tecla library. + ~/.teclarc - The tecla personal customization file. + + +</pre><h2>SEE ALSO</h2><pre> + <a href="tecla.html"><b>tecla</b></a>, <a href="libtecla.html"><b>libtecla</b></a> + + +</pre><h2>AUTHOR</h2><pre> + Martin Shepherd (mcs@astro.caltech.edu) + + + + <a href="enhance.html"><b>enhance</b></a> +</pre> +</body> |