Remove old fish_pager source and implementation

reader.cpp

@@ -1347,144 +1347,6 @@ static void completion_insert(const wchar_t *val, complete_flags_t flags)
     data->suppress_autosuggestion = true;
 }
 
-/* Return an escaped path to fish_pager */
-static wcstring escaped_fish_pager_path(void)
-{
-    wcstring result;
-    const env_var_t bin_dir = env_get_string(L"__fish_bin_dir");
-    if (bin_dir.missing_or_empty())
-    {
-        /* This isn't good, hope our normal command stuff can find it */
-        result = L"fish_pager";
-    }
-    else
-    {
-        result = escape_string(bin_dir + L"/fish_pager", ESCAPE_ALL);
-    }
-    return result;
-}
-
-/**
-   Run the fish_pager command to display the completion list. If the
-   fish_pager outputs any text, it is inserted into the input
-   backbuffer.
-
-   \param prefix the string to display before every completion.
-   \param is_quoted should be set if the argument is quoted. This will change the display style.
-   \param comp the list of completions to display
-*/
-static void run_pager(const wcstring &prefix, int is_quoted, const std::vector<completion_t> &comp)
-{
-    wcstring msg;
-    wcstring prefix_esc;
-    char *foo;
-
-    shared_ptr<io_buffer_t> in_buff(io_buffer_t::create(true, 3));
-    shared_ptr<io_buffer_t> out_buff(io_buffer_t::create(false, 4));
-
-    // The above may fail e.g. if we have too many open fds
-    if (in_buff.get() == NULL || out_buff.get() == NULL)
-        return;
-
-    wchar_t *escaped_separator;
-
-    if (prefix.empty())
-    {
-        prefix_esc = L"\"\"";
-    }
-    else
-    {
-        prefix_esc = escape_string(prefix, 1);
-    }
-
-
-    const wcstring pager_path = escaped_fish_pager_path();
-    const wcstring cmd = format_string(L"%ls -c 3 -r 4 %ls -p %ls",
-                                       // L"valgrind --track-fds=yes --log-file=pager.txt --leak-check=full ./%ls %d %ls",
-                                       pager_path.c_str(),
-                                       is_quoted?L"-q":L"",
-                                       prefix_esc.c_str());
-
-    escaped_separator = escape(COMPLETE_SEP_STR, 1);
-
-    editable_line_t *el = &data->command_line;
-
-    for (size_t i=0; i< comp.size(); i++)
-    {
-        long base_len=-1;
-        const completion_t &cmpl = comp.at(i);
-
-        wcstring completion_text;
-        wcstring description_text;
-
-        // Note that an empty completion is perfectly sensible here, e.g. tab-completing 'foo' with a file called 'foo' and another called 'foobar'
-        if ((cmpl.flags & COMPLETE_REPLACES_TOKEN) && match_type_shares_prefix(cmpl.match.type))
-        {
-            // Compute base_len if we have not yet
-            if (base_len == -1)
-            {
-                const wchar_t *begin, *buff = el->text.c_str();
-
-                parse_util_token_extent(buff, el->position, &begin, 0, 0, 0);
-                base_len = el->position - (begin-buff);
-            }
-
-            completion_text = escape_string(cmpl.completion.c_str() + base_len, ESCAPE_ALL | ESCAPE_NO_QUOTED);
-        }
-        else
-        {
-            completion_text = escape_string(cmpl.completion, ESCAPE_ALL | ESCAPE_NO_QUOTED);
-        }
-
-
-        if (! cmpl.description.empty())
-        {
-            description_text = escape_string(cmpl.description, true);
-        }
-
-        /* It's possible (even common) to have an empty completion with no description. An example would be completing 'foo' with extant files 'foo' and 'foobar'. But fish_pager ignores blank lines. So if our completion text is empty, always include a description, even if it's empty.
-        */
-        msg.reserve(msg.size() + completion_text.size() + description_text.size() + 2);
-        msg.append(completion_text);
-        if (! description_text.empty() || completion_text.empty())
-        {
-            msg.append(escaped_separator);
-            msg.append(description_text);
-        }
-        msg.push_back(L'\n');
-    }
-
-    free(escaped_separator);
-
-    foo = wcs2str(msg.c_str());
-    in_buff->out_buffer_append(foo, strlen(foo));
-    free(foo);
-
-    term_donate();
-    parser_t &parser = parser_t::principal_parser();
-    io_chain_t io_chain;
-    io_chain.push_back(out_buff);
-    io_chain.push_back(in_buff);
-    parser.eval(cmd, io_chain, TOP);
-    term_steal();
-
-    out_buff->read();
-
-    const char zero = 0;
-    out_buff->out_buffer_append(&zero, 1);
-
-    const char *out_data = out_buff->out_buffer_ptr();
-    if (out_data)
-    {
-        const wcstring str = str2wcstring(out_data);
-        size_t idx = str.size();
-        while (idx--)
-        {
-            input_unreadch(str.at(idx));
-        }
-    }
-}
-
 struct autosuggestion_context_t
 {
     wcstring search_string;