95b307103
Denis Vlasenko
2006-12-31
Subject
less: interpret backspace. less is officially declared PAGER-capable! ;) (this includes viewing of manpages)
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miscutils/less.c+13 -0
| @@ -212,11 +212,21 @@ static void read_lines(void) | |
| } | |
| } | |
| c = readbuf[readpos]; | |
| + | /* backspace? [need this for manpage display] */ |
| + | if (c == '\x8' && linepos) { |
| + | readpos++; /* eat it */ |
| + | /* We do not consider the case of <tab><bs> */ |
| + | /* Anyone who has that is pure evil :) */ |
| + | linepos--; |
| + | *p-- = '\0'; |
| + | continue; |
| + | } |
| if (c == '\t') | |
| linepos += (linepos^7) & 7; | |
| linepos++; | |
| if (linepos >= w) | |
| break; | |
| + | /* ok, we will eat this char */ |
| readpos++; | |
| if (c == '\n') { terminated = 1; break; } | |
| /* NUL is substituted by '\n'! */ | |
| @@ -1175,6 +1185,9 @@ int less_main(int argc, char **argv) | |
| { | |
| int keypress; | |
| + | /* TODO: -x: do not interpret backspace, -xx: tab also */ |
| + | /* -xxx: newline also */ |
| + | /* -w N: assume width N (-xxx -w 32: hex viewer of sorts) */ |
| getopt32(argc, argv, "EMmN~"); | |
| argc -= optind; | |
| argv += optind; | |