Define and use a new external message editor option: SAVECOLUMNS

(default: off) - when enabled, the current terminal width (columns) will be
saved in the msg header.
When using the internal msg editor or raw intput mode, the columns are always
saved in the message editor. fseditor.js should have this option enabled.
In SCFG, this option is called "Record Terminal Width".

src/sbbs3/scfg/scfgxtrn.c

@@ -1652,6 +1652,8 @@ void xedit_cfg()
 				,cfg.xedit[i]->misc&XTRN_NATIVE ? "Yes" : "No");
 			sprintf(opt[k++],"%-32.32s%s","Use Shell to Execute"
 				,cfg.xedit[i]->misc&XTRN_SH ? "Yes" : "No");
+			sprintf(opt[k++],"%-32.32s%s","Record Terminal Width"
+				,cfg.xedit[i]->misc&SAVECOLUMNS ? "Yes" : "No");
 			sprintf(opt[k++],"%-32.32s%s","Word-wrap Quoted Text"
 				,cfg.xedit[i]->misc&QUOTEWRAP ? "Yes":"No");
 			sprintf(opt[k++],"%-32.32s%s","Automatically Quoted Text"
@@ -1824,6 +1826,35 @@ void xedit_cfg()
 					}
 					break;
 				case 7:
+					k=(cfg.xedit[i]->misc&SAVECOLUMNS) ? 0:1;
+					uifc.helpbuf=
+						"`Record Terminal Width:`\n"
+						"\n"
+						"When set to `Yes`, Synchronet will store the current terminal width\n"
+						"(in columns) in the header of messages created with this editor and use\n"
+						"the saved value to nicely re-word-wrap the message text when displaying\n"
+						"or quoting the message for other users with different terminal sizes.\n"
+						"\n"
+						"If this editor correctly detects and supports terminal widths `other`\n"
+						"`than 80 columns`, set this option to `Yes`."
+					;
+					switch(uifc.list(WIN_MID|WIN_SAV,0,0,0,&k,0
+						,"Record Terminal Width",uifcYesNoOpts)) {
+						case 0:
+							if(!(cfg.xedit[i]->misc&SAVECOLUMNS)) {
+								cfg.xedit[i]->misc |= SAVECOLUMNS;
+								uifc.changes = TRUE;
+							}
+							break;
+						case 1:
+							if(cfg.xedit[i]->misc&SAVECOLUMNS) {
+								cfg.xedit[i]->misc &= ~SAVECOLUMNS;
+								uifc.changes = TRUE; 
+							}
+							break;
+					}
+					break;
+				case 8:
 					k=(cfg.xedit[i]->misc&QUOTEWRAP) ? 0:1;
 					uifc.helpbuf=
 						"`Word-wrap Quoted Text:`\n"
@@ -1851,7 +1882,7 @@ void xedit_cfg()
 							break;
 					}
 					break;
-				case 8:
+				case 9:
 					switch(cfg.xedit[i]->misc&(QUOTEALL|QUOTENONE)) {
 						case 0:		/* prompt user */
 							k=2;
@@ -1897,7 +1928,7 @@ void xedit_cfg()
 						uifc.changes=TRUE; 
 					}
 					break;
-				case 9:
+				case 10:
 					k=cfg.xedit[i]->misc&QUICKBBS ? 0:1;
 					strcpy(opt[0],"QuickBBS MSGINF/MSGTMP");
 					strcpy(opt[1],"WWIV EDITOR.INF/RESULT.ED");
@@ -1919,7 +1950,7 @@ void xedit_cfg()
 						uifc.changes=TRUE; 
 					}
 					break;
-				case 10:
+				case 11:
 					k=(cfg.xedit[i]->misc&EXPANDLF) ? 0:1;
 					uifc.helpbuf=
 						"`Expand Line Feeds to Carriage Return/Line Feed Pairs:`\n"
@@ -1938,7 +1969,7 @@ void xedit_cfg()
 						uifc.changes=TRUE; 
 					}
 					break;
-				case 11:
+				case 12:
 					k=(cfg.xedit[i]->misc&STRIPKLUDGE) ? 0:1;
 					uifc.helpbuf=
 						"`Strip FidoNet Kludge Lines From Messages:`\n"
@@ -1958,7 +1989,7 @@ void xedit_cfg()
 						uifc.changes=TRUE; 
 					}
 					break;
-				case 12:
+				case 13:
 					k=0;
 					strcpy(opt[k++],"None");
 					sprintf(opt[k++],"%-15s %s","Synchronet","XTRN.DAT");