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

@@ -1025,6 +1025,7 @@ 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 ""
@@ -1032,6 +1033,7 @@ The following keys are supported as appropriate for the mode:
 .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--) {