Add docs for the M and m commands to the dc manual

bugcrazy · Nov 30, 2019 · e8a90e6 · e8a90e6
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diff --git a/manuals/dc.1 b/manuals/dc.1
@@ -329,6 +329,26 @@ The top two values are popped off of the stack, they are compared, and a \fB1\fR
 .IP
 This is a \fBnon\-portable extension\fR\.
 .
+.TP
+\fBM\fR
+The top two values are popped off of the stack\. If they are both non\-zero, a \fB1\fR is pushed onto the stack\. If either of them is zero, or both of them are, then a \fB0\fR is pushed onto the stack\.
+.
+.IP
+This is like the \fB&&\fR operator in bc(1), and it is not a short\-circuit operator\.
+.
+.IP
+This is a \fBnon\-portable extension\fR\.
+.
+.TP
+\fBm\fR
+The top two values are popped off of the stack\. If at least one of them is non\-zero, a \fB1\fR is pushed onto the stack\. If both of them are zero, then a \fB0\fR is pushed onto the stack\.
+.
+.IP
+This is like the \fB||\fR operator in bc(1), and it is not a short\-circuit operator\.
+.
+.IP
+This is a \fBnon\-portable extension\fR\.
+.
 .SS "Stack Control"
 These commands control the stack\.
 .
@@ -438,7 +458,7 @@ Strings can also be executed as macros\. For example, if the string \fB[1pR]\fR
 .
 .TP
 \fB[\fR\fIcharacters\fR\fB]\fR
-Makes a string containing \fBcharacters\fR and pushes it onto the stack\.
+Makes a string containing \fIcharacters\fR and pushes it onto the stack\.
 .
 .IP
 If there are brackets (\fB[\fR and \fB]\fR) in the string, then they must be balanced\. Unbalanced brackets can be escaped using a backslash (\fB\e\fR) character\.

diff --git a/manuals/dc.1.ronn b/manuals/dc.1.ronn
@@ -385,6 +385,26 @@ These are the commands used for arithmetic.
 
     This is a **non-portable extension**.
 
+  * `M`:
+    The top two values are popped off of the stack. If they are both non-zero, a
+    `1` is pushed onto the stack. If either of them is zero, or both of them
+    are, then a `0` is pushed onto the stack.
+
+    This is like the `&&` operator in bc(1), and it is not a short-circuit
+    operator.
+
+    This is a **non-portable extension**.
+
+  * `m`:
+    The top two values are popped off of the stack. If at least one of them is
+    non-zero, a `1` is pushed onto the stack. If both of them are zero, then a
+    `0` is pushed onto the stack.
+
+    This is like the `||` operator in bc(1), and it is not a short-circuit
+    operator.
+
+    This is a **non-portable extension**.
+
 ### Stack Control
 
 These commands control the stack.
@@ -489,7 +509,7 @@ executed as a macro, then the code `1pR` is executed, meaning that the `1` will
 be printed with a newline after and then popped from the stack.
 
   * `[`*characters*`]`:
-    Makes a string containing `characters` and pushes it onto the stack.
+    Makes a string containing *characters* and pushes it onto the stack.
 
     If there are brackets (`[` and `]`) in the string, then they must be
     balanced. Unbalanced brackets can be escaped using a backslash (`\`)