minor backup_lines() cleanups

git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@3127 35c25a1d-7b9e-4130-9fde-d3aeb78583b8

ChangeLog

@@ -40,8 +40,8 @@ CVS code -
 	- Tweak a few functions to remove the assumption that the file
 	  always ends in a magicline.  Changes to cut_line(),
 	  do_cut_till_end(), open_buffer(), read_file(), write_file(),
-	  do_last_line(), do_para_end(), do_alt_speller(), and
-	  do_wordlinechar_count(). (DLR)
+	  do_last_line(), do_para_end(), backup_lines(),
+	  do_alt_speller(), and do_wordlinechar_count(). (DLR)
 	- Tweak a few functions to rely on fileage and filebot instead
 	  of NULL for their checks to detect the top or bottom of the
 	  file.  Changes to cut_line(), cut_to_eol(), do_page_up(),
@@ -108,6 +108,8 @@ CVS code -
 - text.c:
   begpar()
 	- Return FALSE if foo is NULL, as inpar() does. (DLR)
+  backup_lines()
+	- Remove unused quote_len parameter. (DLR)
   do_alt_speller()
 	- Move the code that replaces the text of the current file with
 	  the text of the spell-checked file into its own function,

src/proto.h

@@ -563,8 +563,7 @@ bool indents_match(const char *a_line, size_t a_indent, const char
 	*b_line, size_t b_indent);
 bool begpar(const filestruct *const foo);
 bool inpar(const filestruct *const foo);
-filestruct *backup_lines(filestruct *first_line, size_t par_len, size_t
-	quote_len);
+filestruct *backup_lines(filestruct *first_line, size_t par_len);
 bool find_paragraph(size_t *const quote, size_t *const par);
 void do_justify(bool full_justify);
 void do_justify_void(void);

src/text.c

@@ -949,11 +949,10 @@ bool inpar(const filestruct *const foo)
 }
 
 /* Put the next par_len lines, starting with first_line, into the
- * justify buffer, leaving copies of those lines in place.  Assume there
- * are enough lines after first_line.  Return the new copy of
- * first_line. */
-filestruct *backup_lines(filestruct *first_line, size_t par_len, size_t
-	quote_len)
+ * justify buffer, leaving copies of those lines in place.  Assume that
+ * par_len is greater than zero, and that there are enough lines after
+ * first_line.  Return the new copy of first_line. */
+filestruct *backup_lines(filestruct *first_line, size_t par_len)
 {
     filestruct *top = first_line;
 	/* The top of the paragraph we're backing up. */
@@ -976,6 +975,9 @@ filestruct *backup_lines(filestruct *first_line, size_t par_len, size_t
     }
 #endif
 
+    assert(par_len > 0 && openfile->current->lineno + par_len <=
+	filebot->lineno + 1);
+
     /* Move bot down par_len lines to the newline after the last line of
      * the paragraph. */
     for (i = par_len; i > 0; i--)
@@ -1181,7 +1183,7 @@ void do_justify(bool full_justify)
 	if (first_par_line == NULL)
 	    first_par_line = backup_lines(openfile->current,
 		full_justify ? openfile->filebot->lineno -
-		openfile->current->lineno : par_len, quote_len);
+		openfile->current->lineno : par_len);
 
 	/* Initialize indent_string to a blank string. */
 	indent_string = mallocstrcpy(NULL, "");