rename sample.teco_ini to fallback.teco_ini and mung it by default

* After installation, SciTECO will therefore start into a more userfriendly mode
  even if the user does not create a custom ~/.teco_ini.
  It is hoped that this will scare away less of new users, who
  are not willing to read through all of the documentation.
  Still, users are warned in the absence of ~/.teco_ini.
  This warning however, might not be immediately visible, especially
  not when running gsciteco without an attached console.
  (This will change once I redo the UI and allow a number of messages
  to be queued in the message area.)
* Theoretically, you could also just extend fallback.teco_ini from ~/.teco_ini,
  but that would require installing it into $SCITECOPATH.
* Since the fallback profile will now be munged automatically
  on a wide range of systems, we set up xclip only when detecting X11
  ($DISPLAY is non-empty).
  E.g. when running under Wayland or the Linux console, you still won't
  get the clipboard registers, which is probably better than having the
  clipboard operations fail once you try to use them.
* xclip is now "suggested" on Debian/Ubuntu.
  Unfortunately we cannot pull it in only in the presence of X11.

1 files changed, 9 insertions, 4 deletions

diff --git a/doc/sciteco.1.in b/doc/sciteco.1.in
index b7084c5..0d2662e 100644
--- a/doc/sciteco.1.in
+++ b/doc/sciteco.1.in
@@ -152,7 +152,11 @@ option is absent, \*(ST will mung
 On UNIX/Linux, the default profile is at
 .I ~/.teco_ini
 (see \fBENVIRONMENT\fP).
-It will consequently not expect a \fIscript\fP file name as
+If the per-user profile is missing, \*(ST falls back to
+.IR @scitecodatadir@/fallback.teco_ini .
+Without
+.BR \-\-mung ,
+a \fIscript\fP file name will consequently not be expected as
 the first non-option argument.
 The profile will usually set up various Scintilla and \*(ST options,
 configure syntax highlighting,
@@ -342,7 +346,7 @@ via \*(ST code.
 \# That would only be possible by rewriting everything with GSpawn.
 .SCITECO_TOPIC xclip
 See
-.B @scitecodatadir@/sample.teco_ini
+.B @scitecodatadir@/fallback.teco_ini
 for an example of how to integrate the X11 clipboard via
 .BR xclip (1).
 Integrating with Wayland and the Mac OS clipboards is of course also possible.
@@ -398,8 +402,9 @@ program termination or user-programmed behaviour.
 .B $SCITECOCONFIG/.teco_ini
 Default profile macro.
 .TP
-.B @scitecodatadir@/sample.teco_ini
-Sample profile macro configuring commonly used run-time options,
+.SCITECO_TOPIC "fallback.teco_ini"
+.B @scitecodatadir@/fallback.teco_ini
+Fallback profile macro configuring commonly used run-time options,
 syntax highlighting, session handling
 and opening files specified on the command line.
 .TP