--- rxvt-unicode/doc/rxvtperl.3.txt 2006/01/11 01:00:04 1.20 +++ rxvt-unicode/doc/rxvtperl.3.txt 2006/01/19 19:26:31 1.31 @@ -33,12 +33,33 @@ selection (enabled by default) (More) intelligent selection. This extension tries to be more - intelligent when the user extends selections (double-click). Right - now, it tries to select urls and complete shell-quoted arguments, - which is very convenient, too, if your ls supports - "--quoting-style=shell". + intelligent when the user extends selections (double-click and + further clicks). Right now, it tries to select words, urls and + complete shell-quoted arguments, which is very convenient, too, if + your ls supports "--quoting-style=shell". - It also offers the following bindable keyboard command: + A double-click usually selects the word under the cursor, further + clicks will enlarge the selection. + + The selection works by trying to match a number of regexes and + displaying them in increasing order of length. You can add your own + regexes by specifying resources of the form: + + URxvt.selection.pattern-0: perl-regex + URxvt.selection.pattern-1: perl-regex + ... + + The index number (0, 1...) must not have any holes, and each regex + must contain at least one pair of capturing parentheses, which will + be used for the match. For example, the followign adds a regex that + matches everything between two vertical bars: + + URxvt.selection.pattern-0: \\|([^|]+)\\| + + You can look at the source of the selection extension to see more + interesting uses, such as parsing a line from beginning to end. + + This extension also offers following bindable keyboard commands: rot13 Rot-13 the selection when activated. Used via keyboard trigger: @@ -55,33 +76,130 @@ unescaping, perl evalution, web-browser starting etc.), depending on content. + Other extensions can extend this popup menu by pushing a code + reference onto "@{ $term-"{selection_popup_hook} }>, that is called + whenever the popup is displayed. + + It's sole argument is the popup menu, which can be modified. The + selection is in $_, which can be used to decide wether to add + something or not. It should either return nothing or a string and a + code reference. The string will be used as button text and the code + reference will be called when the button gets activated and should + transform $_. + + The following will add an entry "a to b" that transforms all "a"s in + the selection to "b"s, but only if the selection currently contains + any "a"s: + + push @{ $self->{term}{selection_popup_hook} }, sub { + /a/ ? ("a to be" => sub { s/a/b/g } + : () + }; + searchable-scrollback (enabled by default) Adds regex search functionality to the scrollback buffer, triggered - by a hotkey (default: "M-s"). When in search mode, normal terminal - input/output is suspended. + by a hotkey (default: "M-s"). While in search mode, normal terminal + input/output is suspended and a regex is displayed at the bottom of + the screen. - "/" starts an incremental regex search, "n" searches further, "p" or - "N" jump to the previous match, "G" jumps to the bottom and clears - the history, "enter" leaves search mode at the current position and - "escape" returns to the original position. + Inputting characters appends them to the regex and continues + incremental search. "BackSpace" removes a character from the regex, + "Up" and "Down" search upwards/downwards in the scrollback buffer, + "End" jumps to the bottom. "Escape" leaves search mode and returns + to the point where search was started, while "Enter" or "Return" + stay at the current position and additionally stores the first match + in the current line into the primary selection. - digital-clock - Displays a digital clock using the built-in overlay. + selection-autotransform + This selection allows you to do automatic transforms on a selection + whenever a selection is made. + + It works by specifying perl snippets (most useful is a single "s///" + operator) that modify $_ as resources: + + URxvt.selection-autotransform.0: transform + URxvt.selection-autotransform.1: transform + ... + + For example, the following will transform selections of the form + "filename:number", often seen in compiler messages, into "vi + +$filename $word": + + URxvt.selection-autotransform.0: s/^([^:[:space:]]+):(\\d+):?$/vi +$2 \\Q$1\\E\\x0d/ + + And this example matches the same,but replaces it with vi-commands + you can paste directly into your (vi :) editor: + + URxvt.selection-autotransform.0: s/^([^:[:space:]]+(\\d+):?$/:e \\Q$1\\E\\x0d:$2\\x0d/ + + Of course, this can be modified to suit your needs and your editor + :) + + To expand the example above to typical perl error messages ("XXX at + FILENAME line YYY."), you need a slightly more elaborate solution: + + URxvt.selection.pattern-0: ( at .*? line \\d+[,.]) + URxvt.selection-autotransform.0: s/^ at (.*?) line (\\d+)[,.]$/:e \\Q$1\E\\x0d:$2\\x0d/ + + The first line tells the selection code to treat the unchanging part + of every error message as a selection pattern, and the second line + transforms the message into vi commands to load the file. mark-urls - Uses per-line display filtering ("on_line_update") to underline - urls. + Uses per-line display filtering ("on_line_update") to underline urls + and make them clickable. When middle-clicked, the program specified + in the resource "urlLauncher" (default "x-www-browser") will be + started with the URL as first argument. + + automove-background + This is basically a one-line extension that dynamically changes the + background pixmap offset to the window position, in effect creating + the same effect as pseudo transparency with a custom pixmap. No + scaling is supported in this mode. Exmaple: + + rxvt -pixmap background.xpm -pe automove-background block-graphics-to-ascii A not very useful example of filtering all text output to the terminal, by replacing all line-drawing characters (U+2500 .. U+259F) by a similar-looking ascii character. + digital-clock + Displays a digital clock using the built-in overlay. + example-refresh-hooks Displays a very simple digital clock in the upper right corner of the window. Illustrates overwriting the refresh callbacks to create your own overlays or changes. + selection-pastebin + This is a little rarely useful extension that Uploads the selection + as textfile to a remote site (or does other things). (The + implementation is not currently secure for use in a multiuser + environment as it writes to /tmp directly.). + + It listens to the "selection-pastebin:remote-pastebin" keyboard + command, i.e. + + URxvt.keysym.C-M-e: perl:selection-pastebin:remote-pastebin + + Pressing this combination runs a command with "%" replaced by the + name of the textfile. This command can be set via a resource: + + URxvt.selection-pastebin.cmd: rsync -apP % ruth:/var/www/www.ta-sa.org/files/txt/. + + And the default is likely not useful to anybody but the few people + around here :) + + The name of the textfile is the hex encoded md5 sum of the + selection, so the same content should lead to the same filename. + + After a successful upload the selection will be replaced by the text + given in the "selection-pastebin-url" resource (again, the % is the + placeholder for the filename): + + URxvt.selection-pastebin.url: http://www.ta-sa.org/files/txt/% + API DOCUMENTATION General API Considerations All objects (such as terminals, time watchers etc.) are typical @@ -100,7 +218,7 @@ $text Rxvt-unicodes special way of encoding text, where one "unicode" - character always represents one screen cell. See row_t for a + character always represents one screen cell. See ROW_t for a discussion of this format. $string @@ -167,6 +285,13 @@ Called at the very end of initialisation of a new terminal, just before returning to the mainloop. + on_child_start $term, $pid + Called just after the child process has been "fork"ed. + + on_child_exit $term, $status + Called just after the child process has exited. $status is the + status from "waitpid". + on_sel_make $term, $eventtime Called whenever a selection has been made by the user, but before the selection text is copied, so changes to the beginning, end or @@ -188,7 +313,10 @@ Called whenever the user tries to extend the selection (e.g. with a double click) and is either supposed to return false (normal operation), or should extend the selection itelf and return true to - suppress the built-in processing. + suppress the built-in processing. This can happen multiple times, as + long as the callback returns true, it will be called on every + further click by the user and is supposed to enlarge the selection + more and more, if possible. See the selection example extension. @@ -257,6 +385,11 @@ "perl:string" action bound to it (see description of the keysym resource in the rxvt(1) manpage). + on_x_event $term, $event + Called on every X event received on the vt window (and possibly + other windows). Should only be used as a last resort. Most event + structure members are not passed. + on_focus_in $term Called whenever the window gets the keyboard focus, before rxvt-unicode does focus in processing. @@ -265,6 +398,7 @@ Called wheneever the window loses keyboard focus, before rxvt-unicode does focus out processing. + on_configure_notify $term, $event on_key_press $term, $event, $keysym, $octets on_key_release $term, $event, $keysym on_button_press $term, $event @@ -301,8 +435,6 @@ The current terminal. This variable stores the current "urxvt::term" object, whenever a callback/hook is executing. - * - Functions in the "urxvt" Package urxvt::fatal $errormessage Fatally aborts execution with the given error message. Avoid at all @@ -319,11 +451,6 @@ Messages have a size limit of 1023 bytes currently. - $is_safe = urxvt::safe - Returns true when it is safe to do potentially unsafe things, such - as evaluating perl code specified by the user. This is true when - urxvt was started setuid or setgid. - $time = urxvt::NOW Returns the "current time" (as per the event loop). @@ -331,6 +458,21 @@ urxvt::ShiftMask, LockMask, ControlMask, Mod1Mask, Mod2Mask, Mod3Mask, Mod4Mask, Mod5Mask, Button1Mask, Button2Mask, Button3Mask, Button4Mask, Button5Mask, AnyModifier + urxvt::NoEventMask, KeyPressMask, KeyReleaseMask, ButtonPressMask, + ButtonReleaseMask, EnterWindowMask, LeaveWindowMask, PointerMotionMask, + PointerMotionHintMask, Button1MotionMask, Button2MotionMask, + Button3MotionMask, Button4MotionMask, Button5MotionMask, + ButtonMotionMask, KeymapStateMask, ExposureMask, VisibilityChangeMask, + StructureNotifyMask, ResizeRedirectMask, SubstructureNotifyMask, + SubstructureRedirectMask, FocusChangeMask, PropertyChangeMask, + ColormapChangeMask, OwnerGrabButtonMask + urxvt::KeyPress, KeyRelease, ButtonPress, ButtonRelease, MotionNotify, + EnterNotify, LeaveNotify, FocusIn, FocusOut, KeymapNotify, Expose, + GraphicsExpose, NoExpose, VisibilityNotify, CreateNotify, DestroyNotify, + UnmapNotify, MapNotify, MapRequest, ReparentNotify, ConfigureNotify, + ConfigureRequest, GravityNotify, ResizeRequest, CirculateNotify, + CirculateRequest, PropertyNotify, SelectionClear, SelectionRequest, + SelectionNotify, ColormapNotify, ClientMessage, MappingNotify Various constants for use in X calls and event processing. RENDITION @@ -384,10 +526,9 @@ $term = new urxvt::term $envhashref, $rxvtname, [arg...] Creates a new terminal, very similar as if you had started it with system "$rxvtname, arg...". $envhashref must be a reference to a - %ENV>-like "hash which defines the environment of the new terminal. - " + %ENV-like hash which defines the environment of the new terminal. - >Croaks (and probably outputs an error message) if the new instance + Croaks (and probably outputs an error message) if the new instance couldn't be created. Returns "undef" if the new instance didn't initialise perl, and the terminal object otherwise. The "init" and "start" hooks will be called during this call. @@ -397,6 +538,15 @@ Please note that rxvt will not exit as long as any event watchers (timers, io watchers) are still active. + $term->exec_async ($cmd[, @args]) + Works like the combination of the "fork"/"exec" builtins, which + executes ("starts") programs in the background. This function takes + care of setting the user environment before exec'ing the command + (e.g. "PATH") and should be preferred over explicit calls to "exec" + or "system". + + Returns the pid of the subprocess or "undef" on error. + $isset = $term->option ($optval[, $set]) Returns true if the option specified by $optval is enabled, and optionally change it. All option values are stored by name in the @@ -408,10 +558,10 @@ borderLess console cursorBlink cursorUnderline hold iconic insecure intensityStyles jumpScroll loginShell mapAlert meta8 mouseWheelScrollPage - pastableTabs pointerBlank reverseVideo scrollBar scrollBar_floating - scrollBar_right scrollTtyKeypress scrollTtyOutput scrollWithBuffer - secondaryScreen secondaryScroll skipBuiltinGlyphs transparent - tripleclickwords utmpInhibit visualBell + override-redirect pastableTabs pointerBlank reverseVideo scrollBar + scrollBar_floating scrollBar_right scrollTtyKeypress scrollTtyOutput + scrollWithBuffer secondaryScreen secondaryScroll skipBuiltinGlyphs + transparent tripleclickwords utmpInhibit visualBell $value = $term->resource ($name[, $newval]) Returns the current resource value associated with a given name and @@ -438,14 +588,25 @@ borderLess color cursorBlink cursorUnderline cutchars delete_key display_name embed ext_bwidth fade font geometry hold iconName imFont imLocale inputMethod insecure int_bwidth intensityStyles - italicFont jumpScroll lineSpace loginShell mapAlert menu meta8 modifier - mouseWheelScrollPage name pastableTabs path perl_eval perl_ext_1 perl_ext_2 - perl_lib pointerBlank pointerBlankDelay preeditType print_pipe pty_fd - reverseVideo saveLines scrollBar scrollBar_align scrollBar_floating - scrollBar_right scrollBar_thickness scrollTtyKeypress scrollTtyOutput - scrollWithBuffer scrollstyle secondaryScreen secondaryScroll selectstyle - shade term_name title transparent transparent_all tripleclickwords - utmpInhibit visualBell + italicFont jumpScroll lineSpace loginShell mapAlert meta8 modifier + mouseWheelScrollPage name override_redirect pastableTabs path perl_eval + perl_ext_1 perl_ext_2 perl_lib pointerBlank pointerBlankDelay + preeditType print_pipe pty_fd reverseVideo saveLines scrollBar + scrollBar_align scrollBar_floating scrollBar_right scrollBar_thickness + scrollTtyKeypress scrollTtyOutput scrollWithBuffer scrollstyle + secondaryScreen secondaryScroll selectstyle shade term_name title + transient_for transparent transparent_all tripleclickwords utmpInhibit + visualBell + + $value = $term->x_resource ($pattern) + Returns the X-Resource for the given pattern, excluding the program + or class name, i.e. "$term->x_resource ("boldFont")" should return + the same value as used by this instance of rxvt-unicode. Returns + "undef" if no resource with that pattern exists. + + This method should only be called during the "on_start" hook, as + there is only one resource database per display, and later + invocations might return the wrong resources. $success = $term->parse_keysym ($keysym_spec, $command_string) Adds a keymap translation exactly as specified via a resource. See @@ -466,9 +627,17 @@ Return the current values of the selection mark, begin or end positions, and optionally set them to new values. + $term->selection_make ($eventtime[, $rectangular]) + Tries to make a selection as set by "selection_beg" and + "selection_end". If $rectangular is true (default: false), a + rectangular selection will be made. This is the prefered function to + make a selection. + $success = $term->selection_grab ($eventtime) - Try to request the primary selection from the server (for example, - as set by the next method). + Try to request the primary selection text from the server (for + example, as set by the next method). No visual feedback will be + given. This function is mostly useful from within "on_sel_grab" + hooks. $oldtext = $term->selection ([$newtext]) Return the current selection text and optionally replace it by @@ -523,15 +692,16 @@ $term->scr_xor_span ($beg_row, $beg_col, $end_row, $end_col[, $rstyle]) XORs the rendition values in the given span with the provided value - (default: "RS_RVid"). Useful in refresh hooks to provide effects - similar to the selection. + (default: "RS_RVid"), which *MUST NOT* contain font styles. Useful + in refresh hooks to provide effects similar to the selection. $term->scr_xor_rect ($beg_row, $beg_col, $end_row, $end_col[, $rstyle1[, $rstyle2]]) Similar to "scr_xor_span", but xors a rectangle instead. Trailing whitespace will additionally be xored with the $rstyle2, which defaults to "RS_RVid | RS_Uline", which removes reverse video again - and underlines it instead. + and underlines it instead. Both styles *MUST NOT* contain font + styles. $term->scr_bell Ring the bell! @@ -570,6 +740,12 @@ $windowid = $term->vt Return the window id of the terminal window. + $term->vt_emask_add ($x_event_mask) + Adds the specified events to the vt event mask. Useful e.g. when you + want to receive pointer events all the times: + + $term->vt_emask_add (urxvt::PointerMotionMask); + $window_width = $term->width $window_height = $term->height $font_width = $term->fwidth @@ -581,7 +757,7 @@ $is_mapped = $term->mapped $max_scrollback = $term->saveLines $nrow_plus_saveLines = $term->total_rows - $lines_in_scrollback = $term->nsaved + $topmost_scrollback_row = $term->top_row Return various integers describing terminal characteristics. $x_display = $term->display_id @@ -602,8 +778,8 @@ applicable. $view_start = $term->view_start ([$newvalue]) - Returns the negative row number of the topmost line. Minimum value - is 0, which displays the normal terminal contents. Larger values + Returns the row number of the topmost displayed line. Maximum value + is 0, which displays the normal terminal contents. Lower values scroll this many lines into the scrollback buffer. $term->want_refresh @@ -681,7 +857,8 @@ $offset = $line->offset_of ($row, $col) Returns the character offset of the given row|col pair within - the logical line. + the logical line. Works for rows outside the line, too, and + returns corresponding offsets outside the string. ($row, $col) = $line->coord_of ($offset) Translates a string offset into terminal coordinates again. @@ -738,92 +915,96 @@ Displays the popup (which is initially hidden). The "urxvt::timer" Class - This class implements timer watchers/events. Time is represented as - a fractional number of seconds since the epoch. Example: + This class implements timer watchers/events. Time is represented as a + fractional number of seconds since the epoch. Example: - $term->{overlay} = $term->overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0); - $term->{timer} = urxvt::timer - ->new - ->interval (1) - ->cb (sub { - $term->{overlay}->set (0, 0, - sprintf "%2d:%02d:%02d", (localtime urxvt::NOW)[2,1,0]); - }); - - $timer = new urxvt::timer - Create a new timer object in started state. It is scheduled to - fire immediately. - - $timer = $timer->cb (sub { my ($timer) = @_; ... }) - Set the callback to be called when the timer triggers. - - $tstamp = $timer->at - Return the time this watcher will fire next. - - $timer = $timer->set ($tstamp) - Set the time the event is generated to $tstamp. - - $timer = $timer->interval ($interval) - Normally (and when $interval is 0), the timer will automatically - stop after it has fired once. If $interval is non-zero, then the - timer is automatically rescheduled at the given intervals. + $term->{overlay} = $term->overlay (-1, 0, 8, 1, urxvt::OVERLAY_RSTYLE, 0); + $term->{timer} = urxvt::timer + ->new + ->interval (1) + ->cb (sub { + $term->{overlay}->set (0, 0, + sprintf "%2d:%02d:%02d", (localtime urxvt::NOW)[2,1,0]); + }); + + $timer = new urxvt::timer + Create a new timer object in started state. It is scheduled to fire + immediately. + + $timer = $timer->cb (sub { my ($timer) = @_; ... }) + Set the callback to be called when the timer triggers. + + $tstamp = $timer->at + Return the time this watcher will fire next. + + $timer = $timer->set ($tstamp) + Set the time the event is generated to $tstamp. + + $timer = $timer->interval ($interval) + Normally (and when $interval is 0), the timer will automatically + stop after it has fired once. If $interval is non-zero, then the + timer is automatically rescheduled at the given intervals. + + $timer = $timer->start + Start the timer. - $timer = $timer->start - Start the timer. + $timer = $timer->start ($tstamp) + Set the event trigger time to $tstamp and start the timer. - $timer = $timer->start ($tstamp) - Set the event trigger time to $tstamp and start the timer. + $timer = $timer->after ($delay) + Like "start", but sets the expiry timer to c. - $timer = $timer->stop - Stop the timer. + $timer = $timer->stop + Stop the timer. The "urxvt::iow" Class - This class implements io watchers/events. Example: + This class implements io watchers/events. Example: - $term->{socket} = ... - $term->{iow} = urxvt::iow - ->new - ->fd (fileno $term->{socket}) - ->events (urxvt::EVENT_READ) - ->start - ->cb (sub { - my ($iow, $revents) = @_; - # $revents must be 1 here, no need to check - sysread $term->{socket}, my $buf, 8192 - or end-of-file; - }); - - $iow = new urxvt::iow - Create a new io watcher object in stopped state. - - $iow = $iow->cb (sub { my ($iow, $reventmask) = @_; ... }) - Set the callback to be called when io events are triggered. - $reventmask is a bitset as described in the "events" method. - - $iow = $iow->fd ($fd) - Set the filedescriptor (not handle) to watch. - - $iow = $iow->events ($eventmask) - Set the event mask to watch. The only allowed values are - "urxvt::EVENT_READ" and "urxvt::EVENT_WRITE", which might be - ORed together, or "urxvt::EVENT_NONE". + $term->{socket} = ... + $term->{iow} = urxvt::iow + ->new + ->fd (fileno $term->{socket}) + ->events (urxvt::EVENT_READ) + ->start + ->cb (sub { + my ($iow, $revents) = @_; + # $revents must be 1 here, no need to check + sysread $term->{socket}, my $buf, 8192 + or end-of-file; + }); + + $iow = new urxvt::iow + Create a new io watcher object in stopped state. + + $iow = $iow->cb (sub { my ($iow, $reventmask) = @_; ... }) + Set the callback to be called when io events are triggered. + $reventmask is a bitset as described in the "events" method. + + $iow = $iow->fd ($fd) + Set the filedescriptor (not handle) to watch. + + $iow = $iow->events ($eventmask) + Set the event mask to watch. The only allowed values are + "urxvt::EVENT_READ" and "urxvt::EVENT_WRITE", which might be ORed + together, or "urxvt::EVENT_NONE". - $iow = $iow->start - Start watching for requested events on the given handle. + $iow = $iow->start + Start watching for requested events on the given handle. - $iow = $iow->stop - Stop watching for events on the given filehandle. + $iow = $iow->stop + Stop watching for events on the given filehandle. ENVIRONMENT URXVT_PERL_VERBOSITY - This variable controls the verbosity level of the perl extension. - Higher numbers indicate more verbose output. + This variable controls the verbosity level of the perl extension. Higher + numbers indicate more verbose output. - == 0 - fatal messages - >= 3 - script loading and management - >=10 - all events received + == 0 - fatal messages + >= 3 - script loading and management + >=10 - all called hooks + >=11 - hook reutrn values AUTHOR - Marc Lehmann - http://software.schmorp.de/pkg/rxvt-unicode + Marc Lehmann + http://software.schmorp.de/pkg/rxvt-unicode