shithub: pplay

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cmd: more sensible range requirements

--- a/cmd.c

+++ b/cmd.c

@@ -170,6 +170,10 @@

 {

 	Chunk *left, *right;

+	if(dot.from == 0 && dot.to == totalsz){

+		werrstr("copy: no range selected");

+		return -1;

+	}

 	dprint(hold, "cmd/copy %Δ\n", &dot);

 	splitrange(dot.from, dot.to, &left, &right);

 	snarf(clone(left, right));

@@ -394,10 +398,6 @@

 {

 	int fd;

-	if(dot.to - dot.from == 0){

-		werrstr("writeto: dot isn't a range");

-		return -1;

-	}

 	if((fd = create(arg, OWRITE, 0664)) < 0){

 		werrstr("writeto: %r");

 		return -1;

--- a/pplay.man

+++ b/pplay.man

@@ -140,11 +140,11 @@

 The y axis spans the entire range of possible of a sample,

 with positive values above the midpoint.

 .SS "Editing"

-Editing commands:

+Commands:

 .TF "r file"

 .TP

 .BI <\  cmd

-∗ Pipe output of a shell command replacing dot or inserting at the cursor

+Pipe output of a shell command replacing dot or inserting at the cursor (∗)

 .TP

 .BI ^\  cmd

 Pipe dot to a shell command and read back its output into dot

@@ -153,16 +153,16 @@

 Pipe dot to a shell command

 .TP

 .B c

-Set snarf buffer to the contents of the dot

+Set snarf buffer to the contents of the dot (‡)

 .TP

 .B d

-Cut dot, replacing snarf buffer

+Cut dot, replacing snarf buffer (‡)

 .TP

 .B p

-∗ Paste snarf buffer into dot or insert at the cursor

+Paste snarf buffer into dot or insert at the cursor (∗)

 .TP

 .BI r\  file

-∗ Read file into dot or at the cursor

+Read file into dot or at the cursor (∗)

 .TP

 .B s

 Show dot by piping it to a new

@@ -178,7 +178,7 @@

 .B x

 Crop to dot (exclusive cut); does

 .B not

-touch the snarf buffer

+touch the snarf buffer (‡)

 .PD

 .PP

 Upon typing a key not part of the set of keyboard shortcuts,

@@ -196,9 +196,9 @@

 either the left bound of the dot if set, or the cursor's position.

 Deletions act on and thus require a valid dot,

 smaller than the size of the buffer.

-Commands marked with a star (∗) change their behavior

+Commands above marked with a star (∗) change their behavior

 depending on whether the dot is set or not;

-all others always require a valid dot.

+those marked with a dagger (‡) always require a valid dot.

 .PP

 The

 .I u