commit 5a69e405fcae96b476cdd7a0767e87b94c0b7266
from: Rob Pike <robpike@gmail.com>
date: Tue Oct 22 23:47:48 2013 UTC

acme: scroll a directory window when navigating if:
        - the cursor is on the last line
        - the navigation would put the cursor over the tag of the following text

R=rsc
CC=smckean83
https://codereview.appspot.com/15280045

commit - 075c3bdc54b5201350b88b53d5330cc6a9cc499d
commit + 5a69e405fcae96b476cdd7a0767e87b94c0b7266
blob - 5ab07ec409198536bf6dbe87016249a104bf28b3
blob + f728132fdcbacafd377915bfa63da384105911a4
--- plumb/basic
+++ plumb/basic
@@ -59,11 +59,20 @@ arg isfile	$0
 plumb to openoffice
 plumb start openoffice $file
 
-# existing files tagged by line number:columnumber or linenumber.columnumber, go to editor
+# existing files tagged by line number:columnumber or linenumber.columnumber, twice, go to editor
 type is text
-data matches '([.a-zA-Z¡-￿0-9_/\-]*[a-zA-Z¡-￿0-9_/\-])'$twocolonaddr'
+data matches '([.a-zA-Z¡-￿0-9_/\-]*[a-zA-Z¡-￿0-9_/\-])':$twocolonaddr,$twocolonaddr
 arg isfile     $1
 data set       $file
+attr add       addr=$2-#1+#$3,$4-#1+#$5
+plumb to edit
+plumb client $editor
+
+# existing files tagged by line number:columnumber or linenumber.columnumber, twice, go to editor
+type is text
+data matches '([.a-zA-Z¡-￿0-9_/\-]*[a-zA-Z¡-￿0-9_/\-])':$twocolonaddr
+arg isfile     $1
+data set       $file
 attr add       addr=$2-#1+#$3
 plumb to edit
 plumb client $editor
blob - cd2f120f7b1d86f43606b0fcd75da83084231791
blob + f5595bd43f5fb75781e1159d333390d36a5b17fc
--- plumb/fileaddr
+++ plumb/fileaddr
@@ -1,4 +1,4 @@
 addrelem='((#?[0-9]+)|(/[A-Za-z0-9_\^]+/?)|[.$])'
 addr=:($addrelem([,;+\-]$addrelem)*)
 
-twocolonaddr = :([0-9]+)[:.]([0-9]+)
+twocolonaddr = ([0-9]+)[:.]([0-9]+)
blob - 3c08cd64a34d3a5848497e034c9ecd2ebc82029c
blob + 5a491b1e77fc2236251106d45cf60fa4c4343471
--- src/cmd/acme/text.c
+++ src/cmd/acme/text.c
@@ -808,6 +808,7 @@ texttype(Text *t, Rune r)
 	switch(r){
 	case 0x06:	/* ^F: complete */
 	case Kins:
+		typecommit(t);
 		rp = textcomplete(t);
 		if(rp == nil)
 			return;
@@ -1079,6 +1080,8 @@ textshow(Text *t, uint q0, uint q1, int doselect)
 {
 	int qe;
 	int nl;
+	int tsd;
+	int nc;
 	uint q;
 
 	if(t->what != Body){
@@ -1091,7 +1094,20 @@ textshow(Text *t, uint q0, uint q1, int doselect)
 	if(doselect)
 		textsetselect(t, q0, q1);
 	qe = t->org+t->fr.nchars;
-	if(t->org<=q0 && (q0<qe || (q0==qe && qe==t->file->b.nc+t->ncache)))
+	tsd = FALSE;	/* do we call textscrdraw? */
+	nc = t->file->b.nc+t->ncache;
+	if(t->org <= q0){
+		if(nc==0 || q0<qe)
+			tsd = TRUE;
+		else if(q0==qe && qe==nc){
+			if(textreadc(t, nc-1) == '\n'){
+				if(t->fr.nlines<t->fr.maxlines)
+					tsd = TRUE;
+			}else
+				tsd = TRUE;
+		}
+	}
+	if(tsd)
 		textscrdraw(t);
 	else{
 		if(t->w->nopen[QWevent] > 0)