# st

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    commit 4bd087766f16bd541a1aebd0b0348ecc5fe9b94c
    parent b032814e25ddb166b4621262be4b8a1a0a609e37
    Author: Aurélien Aptel <aurelien.aptel@gmail.com>
    Date:   Fri, 16 Sep 2011 18:48:16 +0200

    selection is removed or scrolled properly. (thx Rafa Garcia Gallego)

    Diffstat:
    Mst.c | 30++++++++++++++++++++++++++++++

    1 file changed, 30 insertions(+), 0 deletions(-)
    diff --git a/st.c b/st.c
    @@ -237,6 +237,7 @@ static void selinit(void);
     static inline int selected(int, int);
     static void selcopy(void);
     static void selpaste();
    +static void selscroll(int, int);

     static int utf8decode(char *, long *);
     static int utf8encode(long *, char *);
    @@ -806,6 +807,8 @@ tscrolldown(int orig, int n) {
     		term.line[i] = term.line[i-n];
     		term.line[i-n] = temp;
     	}
    +
    +	selscroll(orig, n);
     }

     void
    @@ -821,6 +824,31 @@ tscrollup(int orig, int n) {
     		 term.line[i] = term.line[i+n];
     		 term.line[i+n] = temp;
     	}
    +
    +	selscroll(orig, -n);
    +}
    +
    +void
    +selscroll(int orig, int n) {
    +	if(sel.bx == -1)
    +		return;
    +
    +	if(BETWEEN(sel.by, orig, term.bot) || BETWEEN(sel.ey, orig, term.bot)) {
    +		if((sel.by += n) > term.bot || (sel.ey += n) < term.top) {
    +			sel.bx = -1;
    +			return;
    +		}
    +		if(sel.by < term.top) {
    +			sel.by = term.top;
    +			sel.bx = 0;
    +		}
    +		if(sel.ey > term.bot) {
    +			sel.ey = term.bot;
    +			sel.ex = term.col;
    +		}
    +		sel.b.y = sel.by, sel.b.x = sel.bx;
    +		sel.e.y = sel.ey, sel.e.x = sel.ex;
    +	}
     }

     void
    @@ -1077,6 +1105,7 @@ csihandle(void) {
     		break;
     	/* XXX: (CSI n I) CHT -- Cursor Forward Tabulation <n> tab stops */
     	case 'J': /* ED -- Clear screen */
    +		sel.bx = -1;
     		switch(escseq.arg[0]) {
     		case 0: /* below */
     			tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
    @@ -1382,6 +1411,7 @@ tputc(char *c) {
     			}
     		}
     	} else {
    +		if(sel.bx != -1 && BETWEEN(term.c.y, sel.by, sel.ey)) sel.bx = -1;
     		switch(ascii) {
     		case '\t':
     			tputtab();