Add next/previous paragraph, from J Raynor.

mode-key.c

@@ -140,12 +140,14 @@ const struct mode_key_cmdstr mode_key_cmdstr_copy[] = {
 	{ MODEKEYCOPY_RECTANGLETOGGLE, "rectangle-toggle" },
 	{ MODEKEYCOPY_MIDDLELINE, "middle-line" },
 	{ MODEKEYCOPY_NEXTPAGE, "page-down" },
+	{ MODEKEYCOPY_NEXTPARAGRAPH, "next-paragraph" },
 	{ MODEKEYCOPY_NEXTSPACE, "next-space" },
 	{ MODEKEYCOPY_NEXTSPACEEND, "next-space-end" },
 	{ MODEKEYCOPY_NEXTWORD, "next-word" },
 	{ MODEKEYCOPY_NEXTWORDEND, "next-word-end" },
 	{ MODEKEYCOPY_OTHEREND, "other-end" },
 	{ MODEKEYCOPY_PREVIOUSPAGE, "page-up" },
+	{ MODEKEYCOPY_PREVIOUSPARAGRAPH, "previous-paragraph" },
 	{ MODEKEYCOPY_PREVIOUSSPACE, "previous-space" },
 	{ MODEKEYCOPY_PREVIOUSWORD, "previous-word" },
 	{ MODEKEYCOPY_RIGHT, "cursor-right" },
@@ -335,6 +337,8 @@ const struct mode_key_entry mode_key_vi_copy[] = {
 	{ 'q',			    0, MODEKEYCOPY_CANCEL },
 	{ 'v',			    0, MODEKEYCOPY_RECTANGLETOGGLE },
 	{ 'w',			    0, MODEKEYCOPY_NEXTWORD },
+	{ '{',			    0, MODEKEYCOPY_PREVIOUSPARAGRAPH },
+	{ '}',			    0, MODEKEYCOPY_NEXTPARAGRAPH },
 	{ KEYC_BSPACE,		    0, MODEKEYCOPY_LEFT },
 	{ KEYC_DOWN | KEYC_CTRL,    0, MODEKEYCOPY_SCROLLDOWN },
 	{ KEYC_DOWN,		    0, MODEKEYCOPY_DOWN },
@@ -483,6 +487,8 @@ const struct mode_key_entry mode_key_emacs_copy[] = {
 	{ 't',			    0, MODEKEYCOPY_JUMPTO },
 	{ 'v' | KEYC_ESCAPE,	    0, MODEKEYCOPY_PREVIOUSPAGE },
 	{ 'w' | KEYC_ESCAPE,	    0, MODEKEYCOPY_COPYSELECTION },
+	{ '{' | KEYC_ESCAPE,	    0, MODEKEYCOPY_PREVIOUSPARAGRAPH },
+	{ '}' | KEYC_ESCAPE,	    0, MODEKEYCOPY_NEXTPARAGRAPH },
 	{ KEYC_DOWN | KEYC_CTRL,    0, MODEKEYCOPY_SCROLLDOWN },
 	{ KEYC_DOWN | KEYC_ESCAPE,  0, MODEKEYCOPY_HALFPAGEDOWN },
 	{ KEYC_DOWN,		    0, MODEKEYCOPY_DOWN },

tmux.1

@@ -1025,13 +1025,15 @@ The following keys are supported as appropriate for the mode:
 .It Li "Jump to backward" Ta "T" Ta ""
 .It Li "Jump to forward" Ta "t" Ta ""
 .It Li "Next page" Ta "C-f" Ta "Page down"
+.It Li "Next paragraph" Ta "}" Ta "M-}"
 .It Li "Next space" Ta "W" Ta ""
 .It Li "Next space, end of word" Ta "E" Ta ""
 .It Li "Next word" Ta "w" Ta ""
 .It Li "Next word end" Ta "e" Ta "M-f"
 .It Li "Other end of selection" Ta "o" Ta ""
 .It Li "Paste buffer" Ta "p" Ta "C-y"
 .It Li "Previous page" Ta "C-b" Ta "Page up"
+.It Li "Previous paragraph" Ta "{" Ta "M-{"
 .It Li "Previous space" Ta "B" Ta ""
 .It Li "Previous word" Ta "b" Ta "M-b"
 .It Li "Quit mode" Ta "q" Ta "Escape"

tmux.h

@@ -536,12 +536,14 @@ enum mode_key_cmd {
 	MODEKEYCOPY_LEFT,
 	MODEKEYCOPY_MIDDLELINE,
 	MODEKEYCOPY_NEXTPAGE,
+	MODEKEYCOPY_NEXTPARAGRAPH,
 	MODEKEYCOPY_NEXTSPACE,
 	MODEKEYCOPY_NEXTSPACEEND,
 	MODEKEYCOPY_NEXTWORD,
 	MODEKEYCOPY_NEXTWORDEND,
 	MODEKEYCOPY_OTHEREND,
 	MODEKEYCOPY_PREVIOUSPAGE,
+	MODEKEYCOPY_PREVIOUSPARAGRAPH,
 	MODEKEYCOPY_PREVIOUSSPACE,
 	MODEKEYCOPY_PREVIOUSWORD,
 	MODEKEYCOPY_RECTANGLETOGGLE,

window-copy.c

@@ -27,6 +27,8 @@
 struct screen *window_copy_init(struct window_pane *);
 void	window_copy_free(struct window_pane *);
 void	window_copy_pagedown(struct window_pane *);
+void	window_copy_next_paragraph(struct window_pane *);
+void	window_copy_previous_paragraph(struct window_pane *);
 void	window_copy_resize(struct window_pane *, u_int, u_int);
 void	window_copy_key(struct window_pane *, struct client *, struct session *,
 	    key_code, struct mouse_event *);
@@ -403,6 +405,44 @@ window_copy_pagedown(struct window_pane *wp)
 	window_copy_redraw_screen(wp);
 }
 
+void
+window_copy_previous_paragraph(struct window_pane *wp)
+{
+	struct window_copy_mode_data	*data = wp->modedata;
+	u_int				 ox, oy;
+
+	oy = screen_hsize(data->backing) + data->cy - data->oy;
+	ox = window_copy_find_length(wp, oy);
+
+	while (oy > 0 && window_copy_find_length(wp, oy) == 0)
+		oy--;
+
+	while (oy > 0 && window_copy_find_length(wp, oy) > 0)
+		oy--;
+
+	window_copy_scroll_to(wp, 0, oy);
+}
+
+void
+window_copy_next_paragraph(struct window_pane *wp)
+{
+	struct window_copy_mode_data	*data = wp->modedata;
+	struct screen			*s = &data->screen;
+	u_int				 maxy, ox, oy;
+
+	oy = screen_hsize(data->backing) + data->cy - data->oy;
+	maxy = screen_hsize(data->backing) + screen_size_y(s) - 1;
+
+	while (oy < maxy && window_copy_find_length(wp, oy) == 0)
+		oy++;
+
+	while (oy < maxy && window_copy_find_length(wp, oy) > 0)
+		oy++;
+
+	ox = window_copy_find_length(wp, oy);
+	window_copy_scroll_to(wp, ox, oy);
+}
+
 void
 window_copy_resize(struct window_pane *wp, u_int sx, u_int sy)
 {
@@ -548,6 +588,14 @@ window_copy_key(struct window_pane *wp, struct client *c, struct session *sess,
 		for (; np != 0; np--)
 			window_copy_pagedown(wp);
 		break;
+	case MODEKEYCOPY_PREVIOUSPARAGRAPH:
+		for (; np != 0; np--)
+			window_copy_previous_paragraph(wp);
+		break;
+	case MODEKEYCOPY_NEXTPARAGRAPH:
+		for (; np != 0; np--)
+			window_copy_next_paragraph(wp);
+		break;
 	case MODEKEYCOPY_HALFPAGEUP:
 		n = screen_size_y(s) / 2;
 		for (; np != 0; np--) {