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diff --git a/button.c b/button.c
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index ac1f742..4e8554d 100644
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--- a/button.c
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+++ b/button.c
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@@ -3802,6 +3802,7 @@ SaltTextAway(XtermWidget xw,
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TScreen *screen = TScreenOf(xw);
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int i, j = 0;
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int eol;
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+ size_t have = 0;
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Char *line;
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Char *lp;
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CELL first = *cellc;
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@@ -3827,7 +3828,11 @@ SaltTextAway(XtermWidget xw,
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/* UTF-8 may require more space */
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if_OPT_WIDE_CHARS(screen, {
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- j *= 4;
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+ if (j > 0) {
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+ if (screen->max_combining > 0)
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+ j += screen->max_combining;
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+ j *= 6;
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+ }
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});
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/* now get some memory to save it in */
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@@ -3864,10 +3869,27 @@ SaltTextAway(XtermWidget xw,
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}
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*lp = '\0'; /* make sure we have end marked */
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- TRACE(("Salted TEXT:%d:%s\n", (int) (lp - line),
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- visibleChars(line, (unsigned) (lp - line))));
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+ have = (size_t) (lp - line);
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+ /*
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+ * Scanning the buffer twice is unnecessary. Discard unwanted memory if
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+ * the estimate is too-far off.
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+ */
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+ if ((have * 2) < (size_t) j) {
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+ Char *next;
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+ screen->selection_size = have + 1;
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+ next = realloc(line, screen->selection_size);
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+ if (next == NULL) {
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+ free(line);
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+ screen->selection_length = 0;
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+ screen->selection_size = 0;
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+ }
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+ screen->selection_data = next;
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+ }
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+
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+ screen->selection_length = have;
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- screen->selection_length = (unsigned long) (lp - line);
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+ TRACE(("Salted TEXT:%u:%s\n", (unsigned) have,
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+ visibleChars(screen->selection_data, (unsigned) have)));
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}
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#if OPT_PASTE64
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