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-rw-r--r--man/twm.man53
-rw-r--r--src/twm.c30
2 files changed, 61 insertions, 22 deletions
diff --git a/man/twm.man b/man/twm.man
index 619ddaa..c54e38e 100644
--- a/man/twm.man
+++ b/man/twm.man
@@ -43,11 +43,7 @@
.SH NAME
twm \- Tab Window Manager for the X Window System
.SH SYNTAX
-\fBtwm \fP[ \fB\-display\fP \fIdpy\fP ]
-[ \fB\-s\fP ]
-[ \fB\-f\fP \fIinitfile\fP ]
-[ \fB\-v\fP ]
-[ \fB\-V\fP ]
+\fBtwm \fP[ \fIoptions\fP ]
.SH DESCRIPTION
\fITwm\fP is a window manager for the X Window System.
It provides
@@ -111,27 +107,48 @@ Clicking pointer Button3 (usually the right pointer button)
will give the window its current position but attempt to make it long enough
to touch the bottom the screen.
.SH OPTIONS
-\fITwm\fP accepts the following command line options:
+\fITwm\fP accepts several command line options,
+which may be abbreviated, e.g.,
+\*(``\fB\-d\fP\*('' for
+\*(``\fB\-display\fP\*(''
+(but upper/lower-case are different):
+.TP 8
+.B \-clientId \fIID\fP
+Each time \fItwm\fP starts, it calls
+\fBSmcOpenConnection\fP
+to establish a new session.
+It can be told to restart from a previous session by giving the previous
+session's client-identifier.
.TP 8
.B \-display \fIdpy\fP
-This option specifies the X server to use.
+Specify the X server to use.
+.TP 8
+.B \-file \fIfilename\fP
+Specify the name of the startup file to use.
+By default,
+\fItwm\fP will look in the user's home directory for files
+named \fI.twmrc.num\fP (where \fInum\fP is a screen number) or \fI.twmrc\fP.
+.TP 8
+.B \-quiet
+Tells \fItwm\fP that it should not print error messages when
+it receives unexpected X Error events.
.TP 8
-.B \-s
-This option indicates that only the default screen (as specified by
+.B \-restore \fIfilename\fP
+When \fItwm\fP's session is stopped, it attempts to save the current
+window configuration.
+Use this option to tell \fItwm\fP to read this file for that information
+when starting (or restarting) a session.
+.TP 8
+.B \-single
+Tells \fItwm\fP that only the default screen (as specified by
\fB\-display\fP or by the \fBDISPLAY\fP environment variable) should be
managed.
By default, \fItwm\fP will attempt to manage
all screens on the display.
.TP 8
-.B \-f \fIfilename\fP
-This option specifies the name of the startup file to use.
-By default,
-\fItwm\fP will look in the user's home directory for files
-named \fI.twmrc.num\fP (where \fInum\fP is a screen number) or \fI.twmrc\fP.
-.TP 8
-.B \-v
-This option indicates that \fItwm\fP should print error messages whenever
-an unexpected X Error event is received.
+.B \-verbose
+Tells \fItwm\fP that it should print error messages whenever
+it receives an unexpected X Error event.
This can be useful when debugging
applications but can be distracting in regular use.
.TP 8
diff --git a/src/twm.c b/src/twm.c
index a981ac4..ce67806 100644
--- a/src/twm.c
+++ b/src/twm.c
@@ -229,6 +229,20 @@ usage(void)
exit(EXIT_FAILURE);
}
+static Bool
+brief_opt(const char *param, const char *option)
+{
+ size_t have = strlen(++param);
+ size_t want = strlen(option);
+ Bool result = False;
+
+ if (have <= want) {
+ if (!strncmp(param, option, have))
+ result = True;
+ }
+ return result;
+}
+
/***********************************************************************
*
* Procedure:
@@ -263,45 +277,53 @@ main(int argc, char *argv[])
printf("%s %s\n", ProgramName, Version);
exit(EXIT_SUCCESS);
case 'd': /* -display dpy */
- if (strcmp(&argv[i][1], "display"))
+ if (!brief_opt(argv[i], "display"))
usage();
if (++i >= argc)
usage();
display_name = argv[i];
continue;
case 's': /* -single */
+ if (!brief_opt(argv[i], "single"))
+ usage();
MultiScreen = FALSE;
continue;
#ifdef XPRINT
case 'n': /* -noprint */
- if (strcmp(&argv[i][1], "noprint"))
+ if (!brief_opt(argv[i], "noprint"))
usage();
NoPrintscreens = True;
continue;
#endif /* XPRINT */
case 'f': /* -file twmrcfilename */
+ if (!brief_opt(argv[i], "file"))
+ usage();
if (++i >= argc)
usage();
InitFile = argv[i];
continue;
case 'v': /* -verbose */
+ if (!brief_opt(argv[i], "verbose"))
+ usage();
PrintErrorMessages = True;
continue;
case 'c': /* -clientId */
- if (strcmp(&argv[i][1], "clientId"))
+ if (!brief_opt(argv[i], "clientId"))
usage();
if (++i >= argc)
usage();
client_id = argv[i];
continue;
case 'r': /* -restore */
- if (strcmp(&argv[i][1], "restore"))
+ if (!brief_opt(argv[i], "restore"))
usage();
if (++i >= argc)
usage();
restore_filename = argv[i];
continue;
case 'q': /* -quiet */
+ if (!brief_opt(argv[i], "quiet"))
+ usage();
PrintErrorMessages = False;
continue;
}