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Changes by HG
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* renamed getline to gl_getline
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Changes from last patch (v38i004 in comp.sources.misc)
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* added djgpp support on PCs
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* cleanup up __unix__ ifdefs
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* added __STDC__ prototypes in header file
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* change makefile to build an archive and testgl
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* added retry on interrupted read()s
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* fixed GO32 keymapping to handles arrow keys properly
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Changes from last release (v37i050 in comp.sources.misc)
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* Added support for AIX, XENIX, TurboC, gcc (EMX) under OS/2
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* Added ^U (kill line) functionality
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* Added ESC-B/ESC-F backward/forward one word functionality
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* Made it possible to preload history with gl_histadd() before calling
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getline()
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Changes from last release (v28i056 in comp.sources.misc)
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* type-ahead saved in BSD mode (was OK in SYSV and POSIX)
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* fixed POSIX mode bug and enabled termios use if POSIX defined.
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* allow caller to supply a prompt width calculation function so that the
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caller can embed escape sequences into the prompt (see gl_strwidth in
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the man page).
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* added a getline.h header file for inclusion into the caller.
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* man page added, thanks to DaviD W. Sanderson (dws@cs.wisc.edu)
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Changes from previous release (v25i056 and patch v26i092)
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* The user no longer calls gl_init() and gl_cleanup(), getline() sets
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required terminal modes on entry and resets before returning. This
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was necessary to capture changes in terminal modes that the main
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program might be making.
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* Getline() now looks to see which characters are bound to signal
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generation, and when these characters are seen getline() resets
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terminal modes before passing on the signal. If the signal handler
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returns to getline(), the screen is automatically updated and editing
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can continue.
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* The toggle key for overwrite mode has been moved from ^G to ^O
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* All code is now classic rather than ANSI C, so any compiler should
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be able to handle it.
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* ^Y now yanks back previously kill'ed (^K) text starting at the
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current location.
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* ^R/^S begin reverse and forward incremental searches through the
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history list.
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* The programmer must add buffers onto the history list by calling
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gl_addhist(char *buffer). This function makes copies of the buffer
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and adds them to the history list if the buffer is not a blank line
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and if the buffer is different than the last item saved (so the
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program need not check for these conditions)
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* The main program can specify the screen width to use with a call to
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gl_setwidth(int width)
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* Getline now insists that both the input and output are connected to
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a terminal. If this is not the case, an error message is written and
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the program is terminated. The main program should check for this
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case and use buffered IO (stdio) for non-interactive sessions.
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