unspecial: don't assume comma, update description

Fix the unspecial() procedure in file.c :
For writing a ?sv file, don't assume the delimiter is a comma
when multiple delimiters are allowed.
This leads to quoting when we shouldn't and not quoting when
we should.

Also updated the procedure's documentation with the current
functionality.

1 files changed, 6 insertions, 5 deletions

diff --git a/src/file.c b/src/file.c
index 827be0b..c948e0a 100644
--- a/src/file.c
+++ b/src/file.c
@@ -1797,21 +1797,22 @@ void export_latex(char * fname, int r0, int c0, int rn, int cn, int verbose) {
 
 
 /**
- * \brief unspecial()
+ * \brief escape special characters and output cell to file
  *
- * \details Unspecial (backquotes - > ") things that are special
- * chars in a table
+ * \details For the export formats delimiter-separated value
+ * and LaTex. Escapes the special characters in one cell value
+ * and appends the cell to the file.
  *
  * \param[in] f file pointer
- * \param[in] srt string pointer
+ * \param[in] str string pointer
  * \param[in] delim
  *
  * \return none
  */
 void unspecial(FILE * f, char * str, int delim) {
     int backquote = 0;
+    if (strchr(str, delim) != NULL) backquote = 1;
 
-    if (str_in_str(str, ",") != -1) backquote = 1;
     if (backquote) putc('\"', f);
     if (*str == '\\') str++; // delete wheeling string operator, OK?
     while (*str) {