[Minor] Export function to get terminal width from linenoise

contrib/linenoise/linenoise.c

@@ -282,7 +282,7 @@ static int getCursorPosition(int ifd, int ofd) {
 
 /* Try to get the number of columns in the current terminal, or assume 80
  * if it fails. */
-static int getColumns(int ifd, int ofd) {
+int linenoiseGetColumns(int ifd, int ofd) {
     struct winsize ws;
 
     if (ioctl(1, TIOCGWINSZ, &ws) == -1 || ws.ws_col == 0) {
@@ -778,7 +778,7 @@ static int linenoiseEdit(int stdin_fd, int stdout_fd, char *buf, size_t buflen,
     l.plen = strlen(prompt);
     l.oldpos = l.pos = 0;
     l.len = 0;
-    l.cols = getColumns(stdin_fd, stdout_fd);
+    l.cols = linenoiseGetColumns(stdin_fd, stdout_fd);
     l.maxrows = 0;
     l.history_index = 0;
 

contrib/linenoise/linenoise.h

@@ -66,6 +66,9 @@ void linenoiseClearScreen(void);
 void linenoiseSetMultiLine(int ml);
 void linenoisePrintKeyCodes(void);
 
+/* Rspamd specific */
+int linenoiseGetColumns(int ifd, int ofd);
+
 #ifdef __cplusplus
 }
 #endif