Add -E flag when attaching or switching client to bypass

update-environment, from Steven Lu.

tmux.1

@@ -670,7 +670,7 @@ section.
 The following commands are available to manage clients and sessions:
 .Bl -tag -width Ds
 .It Xo Ic attach-session
-.Op Fl dr
+.Op Fl dEr
 .Op Fl c Ar working-directory
 .Op Fl t Ar target-session
 .Xc
@@ -709,6 +709,12 @@ session.
 .Fl c
 will set the session working directory (used for new windows) to
 .Ar working-directory .
+.Pp
+If
+.Fl E
+is used,
+.Ic update-environment
+option will not be applied.
 .It Xo Ic detach-client
 .Op Fl P
 .Op Fl a
@@ -783,7 +789,7 @@ command.
 Lock all clients attached to
 .Ar target-session .
 .It Xo Ic new-session
-.Op Fl AdDP
+.Op Fl AdDEP
 .Op Fl c Ar start-directory
 .Op Fl F Ar format
 .Op Fl n Ar window-name
@@ -858,6 +864,13 @@ By default, it uses the format
 .Ql #{session_name}:
 but a different format may be specified with
 .Fl F .
+.Pp
+If
+.Fl E
+is used,
+.Ic update-environment
+option will not be applied.
+.Ic update-environment .
 .It Xo Ic refresh-client
 .Op Fl S
 .Op Fl t Ar target-client
@@ -912,7 +925,7 @@ Suspend a client by sending
 .Dv SIGTSTP
 (tty stop).
 .It Xo Ic switch-client
-.Op Fl lnpr
+.Op Fl Elnpr
 .Op Fl c Ar target-client
 .Op Fl t Ar target-session
 .Op Fl T Ar key-table
@@ -934,6 +947,12 @@ toggles whether a client is read-only (see the
 .Ic attach-session
 command).
 .Pp
+If
+.Fl E
+is used,
+.Ic update-environment
+option will not be applied.
+.Pp
 .Fl T
 sets the client's key table; the next key from the client will be interpreted from
 .Ar key-table .