[AC21.4] Small patch for console redisplay issues

All, Attached is a small patch for console mode. It fixes two things. One, it fixes the cursor shape, as the termcap entries are reversed in the source (this has bugged me litterally for years, Im sorry I never submitted a patch sooner). The second part of the patch is to disable auto-margins if the terminal can, and uses them. This solves another problem I've had for a long time, where the screen could become corrupted under certain circumstances if the minibuffer display was too long. The patch is against 21.5.21, but the same could (and should) be done for 21.4 if there's to be another release of that.

Kean --- src/redisplay-tty.c.jkj 2005-01-24 15:34:07.000000000 -0800 +++ src/redisplay-tty.c 2005-07-12 14:01:45.000000000 -0700 ＠＠ -874,6 +874,9 ＠＠ OUTPUT1_IF (c, TTY_SD (c).init_motion); OUTPUT1_IF (c, TTY_SD (c).cursor_visible); OUTPUT1_IF (c, TTY_SD (c).keypad_on); + + if (TTY_FLAGS (c).auto_margins) + OUTPUT1_IF (c, TTY_SD (c).disable_auto_margins); } /***************************************************************************** ＠＠ -892,6 +895,9 ＠＠ OUTPUT1_IF (c, TTY_SD (c).cursor_normal); OUTPUT1_IF (c, TTY_SD (c).end_motion); + if (TTY_FLAGS (c).auto_margins) + OUTPUT1_IF (c, TTY_SD (c).enable_auto_margins); + { Lisp_Object frm = CONSOLE_SELECTED_FRAME (c); ＠＠ -1197,12 +1203,14 ＠＠ TTY_SD (c).audio_bell = "\07"; } - TTY_SD (c).cursor_visible = tgetstr ("ve", &bufptr); - TTY_SD (c).cursor_normal = tgetstr ("vs", &bufptr); + TTY_SD (c).cursor_visible = tgetstr ("vs", &bufptr); + TTY_SD (c).cursor_normal = tgetstr ("ve", &bufptr); TTY_SD (c).init_motion = tgetstr ("ti", &bufptr); TTY_SD (c).end_motion = tgetstr ("te", &bufptr); TTY_SD (c).keypad_on = tgetstr ("ks", &bufptr); TTY_SD (c).keypad_off = tgetstr ("ke", &bufptr); + TTY_SD (c).disable_auto_margins = tgetstr ("RA", &bufptr); + TTY_SD (c).enable_auto_margins = tgetstr ("SA", &bufptr); /* ＠＠ -1215,6 +1223,7 ＠＠ TTY_FLAGS (c).memory_below_frame = tgetflag ("db"); TTY_FLAGS (c).standout_width = tgetnum ("sg"); TTY_FLAGS (c).underline_width = tgetnum ("ug"); + TTY_FLAGS (c).auto_margins = tgetflag ("am"); if (TTY_FLAGS (c).standout_width == -1) TTY_FLAGS (c).standout_width = 0; --- src/console-tty-impl.h.jkj 2002-06-20 14:18:24.000000000 -0700 +++ src/console-tty-impl.h 2005-07-12 14:01:51.000000000 -0700 ＠＠ -81,6 +81,8 ＠＠ character info */ unsigned int flow_control :1; /* Nonzero means use ^S/^Q as cretinous flow control. */ + unsigned int auto_margins :1; /* Nonzero means terminal wraps when + writing to the last column */ int standout_width; /* # of spaces printed when change to standout mode */ int underline_width; /* # of spaces printed when ＠＠ -174,6 +176,9 ＠＠ const char *keypad_off; /* rmkx, ke */ const char *orig_pair; /* op, op */ + + const char *disable_auto_margins; /* rmam, RA */ + const char *enable_auto_margins; /* smam, SA */ } sd; /* costs of various operations */