From 9abb6857918960af55433274d71829832a74a47d Mon Sep 17 00:00:00 2001
From: Eduardo Chappa <chappa@washington.edu>
Date: Sun, 29 May 2016 17:40:39 -0600
Subject:    * The TAB key allows autocomplete in the Fcc field in the composer
 headers,      as well as autocompletes automatically when only one
 possibility exists      for the ^J attach command.

---
 alpine/folder.c | 34 ++++++++++++++++++++++++++++++++++
 alpine/folder.h |  2 +-
 alpine/send.c   |  2 +-
 pico/file.c     | 14 ++++++++++++--
 pith/pine.hlp   |  4 ++++
 5 files changed, 52 insertions(+), 4 deletions(-)

diff --git a/alpine/folder.c b/alpine/folder.c
index be084ed8..b94c9068 100644
--- a/alpine/folder.c
+++ b/alpine/folder.c
@@ -6889,6 +6889,40 @@ get_post_list(char **post_host)
 }
 
 
+int
+fcc_tab_complete (char *prefix, char **answer, int tabtab, unsigned flags)
+{
+  char tmp[MAILTMPLEN+1];
+  int n;
+  CONTEXT_S *mc;
+
+  if(prefix == NULL ||  *prefix == '\0')
+     return 0;
+
+  for(mc = ps_global->context_list; mc != NULL; mc = mc->next)
+    if(mc->use & CNTXT_SAVEDFLT)
+      break;
+
+  if(mc == NULL) return 0;
+
+  strncpy(tmp, prefix, sizeof(tmp));
+  tmp[sizeof(tmp)-1] = '\0';
+
+  if(!folder_complete(mc, tmp, sizeof(tmp), &n)){
+    if(n){
+       if(tabtab)
+	 display_folder_list(&mc, tmp, 1,folders_for_goto);
+    }
+    else
+       Writechar(BELL, 0);
+  }
+  if(n)
+     *answer = cpystr(tmp);
+  return n == 0 ? 0 : n == 1 ? 2 : 1;
+}
+
+
+
 #ifdef	_WINDOWS
 int
 folder_list_popup(sparms, in_handle)
diff --git a/alpine/folder.h b/alpine/folder.h
index 6e9fbee5..f5996efb 100644
--- a/alpine/folder.h
+++ b/alpine/folder.h
@@ -34,6 +34,6 @@ char	   *context_edit_screen(struct pine *, char *, char *, char *, char *, char
 int	    add_new_folder(CONTEXT_S *, EditWhich, int, char *, size_t, MAILSTREAM *, char *);
 char	   *next_folder(MAILSTREAM **, char *, size_t, char *, CONTEXT_S *, long *, int *);
 char	   *news_group_selector(char **);
-
+int	    fcc_tab_complete(char *, char **, int, unsigned);
 
 #endif /* PINE_FOLDER_INCLUDED */
diff --git a/alpine/send.c b/alpine/send.c
index dfba59f3..90561345 100644
--- a/alpine/send.c
+++ b/alpine/send.c
@@ -929,7 +929,7 @@ static struct headerentry he_template[]={
    news_build,    NULL, NULL, news_group_selector,  "To NwsGrps", NULL, NULL,
    0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, KS_NONE},
   {"Fcc     : ",  "Fcc",         h_composer_fcc,        10, 0, NULL,
-   NULL,          NULL, NULL, folders_for_fcc,      "To Fldrs", NULL, NULL,
+   NULL,          NULL, NULL, folders_for_fcc,      "To Fldrs", NULL, fcc_tab_complete,
    0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, KS_NONE},
   {"Lcc     : ",  "Lcc",         h_composer_lcc,        10, 0, NULL,
    build_addr_lcc, NULL, NULL, addr_book_compose_lcc,"To AddrBk", NULL, abook_nickname_complete,
diff --git a/pico/file.c b/pico/file.c
index 149971f0..1b41f181 100644
--- a/pico/file.c
+++ b/pico/file.c
@@ -1016,7 +1016,7 @@ int
 pico_fncomplete(char *dirarg, char *fn, size_t fnlen)
 {
     char *p, *dlist, tmp[NLINE], dir[NLINE];
-    int   n, i, match = -1;
+    int   n, i, match = -1, orign;
 #ifdef	DOS
 #define	FILECMP(x, y)	(toupper((unsigned char)(x))\
 				== toupper((unsigned char)(y)))
@@ -1027,9 +1027,16 @@ pico_fncomplete(char *dirarg, char *fn, size_t fnlen)
     strncpy(dir, dirarg, sizeof(dir));
     dir[sizeof(dir)-1] = '\0';
     pfnexpand(dir, sizeof(dir));
-    if(*fn && (dlist = p = getfnames(dir, fn, &n, NULL, 0))){
+    if((dlist = p = getfnames(dir, fn, &n, NULL, 0))){
+	orign = n;
 	memset(tmp, 0, sizeof(tmp));
 	while(n--){			/* any names in it */
+	    if(strcmp(p, ".") == 0 || strcmp(p, "..") == 0){
+	      p += strlen(p) + 1;
+	      orign--;
+	      continue;
+	    }
+
 	    for(i = 0; i < sizeof(tmp)-1 && fn[i] && FILECMP(p[i], fn[i]); i++)
 	      ;
 
@@ -1054,6 +1061,9 @@ pico_fncomplete(char *dirarg, char *fn, size_t fnlen)
 	free(dlist);
     }
 
+    if(fn[0] == '\0' && orign != 1)
+	match = -1;
+
     if(match >= 0){
 	strncpy(fn, tmp, fnlen);
 	fn[fnlen-1] = '\0';
diff --git a/pith/pine.hlp b/pith/pine.hlp
index 2a02cc2b..23c88ea6 100644
--- a/pith/pine.hlp
+++ b/pith/pine.hlp
@@ -207,6 +207,10 @@ Additions include:
        subcommand ^N to decode the file name and save the file with the 
        decoded name.
 
+  <LI> The TAB key allows autocomplete in the Fcc field in the composer headers,
+       as well as autocompletes automatically when only one possibility exists 
+       for the ^J attach command.
+
   <LI> Ignore message from smtp server after a successful authentication
        challenge.
 
-- 
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