jimsh, interp, tests: fixes when line editing is disabled

- Set jim::lineedit to indicate if line editing is configured
- Ensure that aio tty works even if line editing is disabled
- Skip some tests if line editing is not configured

Signed-off-by: Steve Bennett <steveb@workware.net.au>

Author: msteveb

auto.def

@@ -464,8 +464,10 @@ if {[opt-bool-unless-minimal ssl]} {
         define-append AS_CFLAGS -DUSE_TLSv1_2_method
     }
 }
-if {[opt-bool-unless-minimal lineedit]} {
-    if {([cc-check-includes termios.h] && [have-feature isatty]) || [have-feature winconsole]} {
+
+# Still need to check termios.h and isatty even if lineedit is disabled
+if {([cc-check-includes termios.h] && [have-feature isatty]) || [have-feature winconsole]} {
+    if {[opt-bool-unless-minimal lineedit]} {
         msg-result "Enabling line editing"
         define USE_LINENOISE
         define-append PARSE_UNIDATA_FLAGS -width

jim-interp.c

@@ -141,6 +141,10 @@ static int JimInterpCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 {
     Jim_Interp *child;
     char buf[34];
+    int i;
+    static const char * const copyvars[] = {
+        "argv", "argc", "argv0", "jim::argv0", "jim::exe", "jim::lineedit", NULL
+    };
 
     if (argc != 1) {
         Jim_WrongNumArgs(interp, 1, argv, "");
@@ -153,11 +157,9 @@ static int JimInterpCommand(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
     Jim_InitStaticExtensions(child);
 
     /* Copy some core variables to the new interpreter */
-    JimInterpCopyVariable(child, interp, "argv", NULL);
-    JimInterpCopyVariable(child, interp, "argc", NULL);
-    JimInterpCopyVariable(child, interp, "argv0", NULL);
-    JimInterpCopyVariable(child, interp, "jim::argv0", NULL);
-    JimInterpCopyVariable(child, interp, "jim::exe", NULL);
+    for (i = 0; copyvars[i]; i++) {
+        JimInterpCopyVariable(child, interp, copyvars[i], NULL);
+    }
 
     /* Allow the child interpreter to find the parent */
     Jim_SetAssocData(child, "interp.parent", NULL, interp);

jim_tcl.txt

@@ -5888,6 +5888,10 @@ The following global variables are set by jimsh.
 +*jim::argv0*+::
     The value of argv[0] when jimsh was invoked.
 
++*jim::lineedit*+::
+    This variables is set to 1 if jimsh was configured with line editing support,
+    or 0 if not.
+
 The following variables have special meaning to Jim Tcl:
 
 +*jim::defer*+::

jimsh.c

@@ -109,6 +109,11 @@ int main(int argc, char *const argv[])
 
     Jim_SetVariableStrWithStr(interp, "jim::argv0", orig_argv0);
     Jim_SetVariableStrWithStr(interp, JIM_INTERACTIVE, argc == 1 ? "1" : "0");
+#ifdef USE_LINENOISE
+    Jim_SetVariableStrWithStr(interp, "jim::lineedit", "1");
+#else
+    Jim_SetVariableStrWithStr(interp, "jim::lineedit", "0");
+#endif
     retcode = Jim_initjimshInit(interp);
 
     if (argc == 1) {

tests/history.test

@@ -1,6 +1,7 @@
 source [file dirname [info script]]/testing.tcl
 
 needs cmd {history save}
+needs expr "jim::lineedit" {$jim::lineedit}
 
 test history-1.1 {history usage} -body {
 	history

tests/interactive.test

@@ -3,6 +3,7 @@ source [file dirname [info script]]/testing.tcl
 needs constraint jim
 needs cmd socket
 needs eval "socket pty" {lmap p [socket pty] { $p close }}
+constraint expr lineedit {$jim::lineedit}
 
 package require expect
 
@@ -44,7 +45,7 @@ test interactive-1.1 {basic command} -body {
 	wait-for-prompt $p
 }
 
-test interactive-1.2 {command line completion} {
+test interactive-1.2 {command line completion} lineedit {
 	set check 0
 	set failed 0
 	$p send "li\t"
@@ -62,7 +63,7 @@ test interactive-1.2 {command line completion} {
 	list $check $failed
 } {3 0}
 
-test interactive-1.3 {history show} -body {
+test interactive-1.3 {history show} -constraints lineedit -body {
 	$p send "history show\r"
 	$p expect {\r\n}
 	$p expect {history show\r\n}
@@ -71,7 +72,7 @@ test interactive-1.3 {history show} -body {
 	wait-for-prompt $p
 }
 
-test interactive-1.4 {history getline} -body {
+test interactive-1.4 {history getline} -constraints lineedit -body {
 	$p send "history getline {PROMPT> }\r"
 	$p expect {\r\n}
 	sleep 0.25
@@ -83,7 +84,7 @@ test interactive-1.4 {history getline} -body {
 	wait-for-prompt $p
 }
 
-test interactive-1.4 {history getline} -body {
+test interactive-1.5 {history getline} -constraints lineedit -body {
 	$p send "set len \[history getline {PROMPT> } buf\]\r"
 	$p expect {\r\n}
 	sleep 0.25
@@ -100,7 +101,7 @@ test interactive-1.4 {history getline} -body {
 	wait-for-prompt $p
 }
 
-test interactive-1.5 {insert wide character} -constraints utf8 -body {
+test interactive-1.6 {insert wide character} -constraints {utf8 lineedit} -body {
 	$p send "set x a\u1100b"
 	# now arrow left twice over the wide char and insert another char
 	$p send \x1bOD
@@ -115,7 +116,7 @@ test interactive-1.5 {insert wide character} -constraints utf8 -body {
 	wait-for-prompt $p
 }
 
-test interactive-1.6 {insert utf-8 combining character} -constraints utf8 -body {
+test interactive-1.7 {insert utf-8 combining character} -constraints {utf8 lineedit} -body {
 	$p send "set x x\u0300"
 	# now arrow left twice over the combining char and "x" and insert another char
 	$p send \x1bOD