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70
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1 Date: Wed, 8 Apr 92 18:51:54 JST
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2 From: gniibe@mri.co.jp (NIIBE Yutaka)
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3 Return-Path: <gniibe@mri.co.jp>
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4 To: handa@etl.go.jp
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5 Subject: note on indent.h, indent.c, and xdisp.c
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6
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7 $B:G8e$KKM$N$d$C$?=$@5$K4X$7$F(B, $B3P=q$rAw$j$^$9!#(B
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8 --
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9 GniiBE
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10 ================ FROM HERE ==============
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11 compute_motion (), display_text_string () $B$K4X$9$k3P=q(B ; -*- Indented-Text -*-
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12 Tue Apr 7 09:35:41 1992
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13 Wed Apr 8 18:26:26 1992
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14 GniiBE <gniibe@mri.co.jp>
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15
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16 column $B$r85$K(B tab $B$N7W;;$O9T$J$o$l$k!#(B
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17
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18 multi width (multi column $B$GESCf$G3d$k$3$H$N$G$-$J$$(B) character
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19 ($B4A;z$J$I(B)$B$,$"$k>l9g(B, $B0l9T$O0lDj$N(B column $B$G$"$k$H$O8B$i$J$$!#(B
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20
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21 ----------
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22 $B$3$s$J>l(B\\
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23 $B9g$,$"$k(B\\
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24 $B$s$G$9!#(B
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25 ----------
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26
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27 $BK\2H$N(B emacs $B$O!V0l9T$O0lDj$N(B column $B$G$"$k!W$H2>Dj$7$F$$$k!#(B
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28 $B$3$NItJ,$r=$@5$9$kI,MW$,$"$k!#(B
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29
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30 struct position $B$K(B tab_offset $B$H$$$&(B member $B$rDI2C$7(B, $B$=$3$K(B
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31 tab_offset $B$NCM$rJ];}$9$k$3$H$G$3$N=$@5$r$*$3$J$&!#(B
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32
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33 $B$3$3$G(B, tab_offset $B$H(B hpos, column $B$N4V$K$O(B,
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34
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35 tab_offset + hpos = column
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36
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37 $B$H$$$&4X78$,$"$k!#$^(B, $BAa$$OC$7$,(B column $B$r$$$A$$$A7W;;$7$J$$$G3P$((B
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38 $B$H$3$C$H$H$$$&$b$s$G$7$g$&!#(B
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39
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40
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41 * indent.h (struct position):
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42 tab_offset $B$H$$$&(B member $B$rDI2C$7$?!#(B
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43
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44 * indent.c (compute_motion):
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45 truncate, lastpos $B$rDI2C!#(B
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46 $B7W;;$NJ}K!$rJQ$($k!#(B
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47 emacs $B$N(B bug $B=$@5!#(B
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48
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49 for ()
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50 {
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51 (1) $B%-%c%i%/%?$,$I$l$@$1?J$`$+7W;;(B;
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52 (2) width $B$rD6$($k$s$@$C$?$i$=$N=hM}(B;
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53 }
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54
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55 $B$N(B (2) $B$N!VD6$($A$c$&!W$N>r7o$r!VD6$($A$c$C$?!W$KJQ99$9(B
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56 $B$k!#0J2<$N$h$&$K$J$k!#(B
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57
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58 for ()
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59 {
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60 (1) $B%-%c%i%/%?$,$I$l$@$1?J$`$+7W;;(B;
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61 (2) width $B$rD6$A$c$C$?$i$=$N=hM}(B;
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62 }
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63
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64 (3-1) $B1[$($A$c$&$G=hM}$5$l$?$O$:$N=hM}(B($B0l$DLa$9(B);
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65 (3-2) $B1[$($A$c$&$N=hM}(B;
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66
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67 (**) pos : buffer $B>e$N0LCV(B
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68 (**) (hpos, vpos) : $B2hLL>e$N0LCV(B
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69
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70 compute_motion $B$O(B
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71 (i) $B$"$k(B (hpos, vpos) $B$^$GI=<($9$k$K$O$I$N(B pos $B$,BP1~$9$k$+(B
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72 (ii) $B$"$k(B pos $B$^$GI=<($7$?$i$I$3$N(B (hpos, vpos) $B$K$J$k$+(B
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73 $B$NFsDL$j$N7W;;$K;H$o$l$k!#(B
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74
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75 $B$=$7$F(B, loop $B$N=*N;>r7o$O(B, (i) $B$N>l9g(B (hpos, vpos), (ii) $B$N>l9g(B
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76 pos $B$K$J$k!#(B
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77
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78 $B$=$l$G(B,
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79
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80 ---------- ($B;29M(B) ----------
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81 abcdefgh\\ abcdefgh\\
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82 $B4A(B ^----(a) 333 ^---- cursor $B$O$3$3$K$/$k!#(B
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83 ^---- (b) cursor $B$O$3$3$K$/$k!#(B ^---- $B<!$O$3$3!#(B
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84 ^---- (c) $B<!$O$3$3!#(B ----------
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85 ---------- multi column character $B$N>l9g!#(B
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86 multi width char. $B$N>l9g!#(B
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87
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88 ----------
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89 abcdefghi\
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90 j ^---- (a)
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91 ^---(b)
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92 ^-----(c)
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93 ----------
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94 $BIaDL$N(B char. $B$N>l9g!#(B
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95
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96 (i) $B$KBP$7$F(B, (3-1) $B$N=hM}$O(B, (c) $B$G9T$r1[$($?$H;W$C$F$$$k$H$3$m(B
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97 $B$r(B, $B$=$NA0$G1[$($F$$$?$H(B (b) $B$K(B (hpos, vpos) $B$rLa$7(B, pos $B$b0l$DLa(B
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98 $B$9=hM}$r$9$k!#(B
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99
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100 (ii) $B$KBP$7$F(B, (3-2) $B$N=hM}$O(B, (a) $B$K(B (hpos, vpos) $B$,$"$k$H;W$C$F(B
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101 $B$$$k$N$r(B (b) $B$K0\$9!#(B
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102
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103 * indent.c (pos_tab_offset):
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104 $BK\2H$N(B pos_tab_offset $B$O!V0l9T$O0lDj$N(B column(s) $B$G$"$k!W(B
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105 $B$3$H$r2>Dj$7(B, current_column $B$G(B column $B$r5a$a$F(B, $B$=$l$G(B
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106 width $B$G(B % $B$H$C$?$j$7$F$$$k!#$^$:$$$N$G(B, $B=q$-D>$7!#(B
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107
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108 * indent.c (vmotion):
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109 pos.vpos * width $B$H$$$&!V0l9T$O0lDj$N(B column(s) $B$G$"$k!W(B
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110 $B$3$H$r2>Dj$7$F$"$kItJ,$r=$@5(B, pos.tab_offset $B$rMQ$$$k!#(B
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111
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112 * xdisp.c (redisplay):
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113
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114 -------- --------
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115 $B$3$s$J(Ba\ DEL $B$3$s$J(B\\
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116 $B>l9g(B ==> $B>l9g(B
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117 ^^ ^^
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118 -------- --------
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119
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120 $B$r=hM}$9$k$h$&$K(B, goto cancel $B$K$J$k>r7o$r$D$1$k!#(B
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121
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122 * xdisp.c (try_window):
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123 tab_offset $B$N=hM}!#(B
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124
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125 * xdisp.c (try_window_id):
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126 emacs $B$N(B bug $B=$@5!#(B
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127 tab_offset $B$N=hM}!#(B
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128
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129 * xdisp.c (display_text_line):
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130 tab_offset $B$N=hM}!#(B
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131 $B9TKv$N(B truncate, multi width char. $B$N>l9g(B, $$ $B$N=hM}!#(B
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132 emacs $B$N(B bug $B=$@5!#(B
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133
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