/usr/lib/urxvt/perl/searchable-scrollback is in rxvt-unicode 9.19-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 | #! perl
# this extension implements scrollback buffer search
#:META:X_RESOURCE:%:string:activation hotkey keysym
=head1 NAME
searchable-scrollback<hotkey> - incremental scrollback search (enabled by default)
=head1 DESCRIPTION
Adds regex search functionality to the scrollback buffer, triggered
by a hotkey (default: C<M-s>). While in search mode, normal terminal
input/output is suspended and a regex is displayed at the bottom of the
screen.
Inputting characters appends them to the regex and continues incremental
search. C<BackSpace> removes a character from the regex, C<Up> and C<Down>
search upwards/downwards in the scrollback buffer, C<End> jumps to the
bottom. C<Escape> leaves search mode and returns to the point where search
was started, while C<Enter> or C<Return> stay at the current position and
additionally stores the first match in the current line into the primary
selection if the C<Shift> modifier is active.
The regex defaults to "(?i)", resulting in a case-insensitive search. To
get a case-sensitive search you can delete this prefix using C<BackSpace>
or simply use an uppercase character which removes the "(?i)" prefix.
See L<perlre> for more info about perl regular expression syntax.
=cut
sub on_init {
my ($self) = @_;
my $hotkey = $self->{argv}[0]
|| $self->x_resource ("%")
|| "M-s";
$self->parse_keysym ($hotkey, "perl:searchable-scrollback:start")
or warn "unable to register '$hotkey' as scrollback search start hotkey\n";
()
}
sub on_user_command {
my ($self, $cmd) = @_;
$cmd eq "searchable-scrollback:start"
and $self->enter;
()
}
sub msg {
my ($self, $msg) = @_;
$self->{overlay} = $self->overlay (0, -1, $self->ncol, 1, urxvt::OVERLAY_RSTYLE, 0);
$self->{overlay}->set (0, 0, $self->special_encode ($msg));
}
sub enter {
my ($self) = @_;
return if $self->{overlay};
$self->{view_start} = $self->view_start;
$self->{pty_ev_events} = $self->pty_ev_events (urxvt::EV_NONE);
$self->{row} = $self->nrow - 1;
$self->{search} = "(?i)";
$self->enable (
key_press => \&key_press,
tt_write => \&tt_write,
refresh_begin => \&refresh,
refresh_end => \&refresh,
);
$self->{manpage_overlay} = $self->overlay (0, -2, $self->ncol, 1, urxvt::OVERLAY_RSTYLE, 0);
$self->{manpage_overlay}->set (0, 0, "scrollback search, see the ${urxvt::RXVTNAME}perl manpage for details");
$self->idle;
}
sub leave {
my ($self) = @_;
$self->disable ("key_press", "tt_write", "refresh_begin", "refresh_end");
$self->pty_ev_events ($self->{pty_ev_events});
delete $self->{manpage_overlay};
delete $self->{overlay};
delete $self->{history};
delete $self->{search};
}
sub idle {
my ($self) = @_;
$self->msg ("(escape cancels) /$self->{search}█");
}
sub search {
my ($self, $dir) = @_;
delete $self->{found};
my $row = $self->{row};
my $search = $self->special_encode ($self->{search});
no re 'eval'; # just to be sure
if (my $re = eval { qr/$search/ }) {
while ($self->nrow > $row && $row >= $self->top_row) {
my $line = $self->line ($row)
or last;
my $text = $line->t;
if ($text =~ /$re/g) {
do {
push @{ $self->{found} }, [$line->coord_of ($-[0]), $line->coord_of ($+[0])];
} while $text =~ /$re/g;
$self->{row} = $row;
$self->view_start (List::Util::min 0, $row - ($self->nrow >> 1));
$self->want_refresh;
last;
}
$row = $dir < 0 ? $line->beg - 1 : $line->end + 1;
}
}
$self->scr_bell unless $self->{found};
}
sub refresh {
my ($self) = @_;
return unless $self->{found};
my $xor = urxvt::RS_RVid | urxvt::RS_Blink;
for (@{ $self->{found} }) {
$self->scr_xor_span (@$_, $xor);
$xor = urxvt::RS_RVid;
}
()
}
sub key_press {
my ($self, $event, $keysym, $string) = @_;
delete $self->{manpage_overlay};
if ($keysym == 0xff0d || $keysym == 0xff8d) { # enter
if ($self->{found} && $event->{state} & urxvt::ShiftMask) {
my ($br, $bc, $er, $ec) = @{ $self->{found}[0] };
$self->selection_beg ($br, $bc);
$self->selection_end ($er, $ec);
$self->selection_make ($event->{time});
}
$self->leave;
} elsif ($keysym == 0xff1b) { # escape
$self->view_start ($self->{view_start});
$self->leave;
} elsif ($keysym == 0xff57) { # end
$self->{row} = $self->nrow - 1;
$self->view_start (0);
} elsif ($keysym == 0xff52) { # up
$self->{row}-- if $self->{row} > $self->top_row;
$self->search (-1);
} elsif ($keysym == 0xff54) { # down
$self->{row}++ if $self->{row} < $self->nrow;
$self->search (+1);
} elsif ($keysym == 0xff08) { # backspace
substr $self->{search}, -1, 1, "";
$self->search;
$self->idle;
} elsif ($string !~ /[\x00-\x1f\x80-\xaf]/) {
return; # pass to tt_write
}
1
}
sub tt_write {
my ($self, $data) = @_;
$self->{search} .= $self->locale_decode ($data);
$self->{search} =~ s/^\(\?i\)//
if $self->{search} =~ /^\(.*[[:upper:]]/;
$self->search (-1);
$self->idle;
1
}
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