aboutsummaryrefslogtreecommitdiffstats
path: root/include
diff options
context:
space:
mode:
Diffstat (limited to 'include')
-rw-r--r--include/qpdf/InputSource.hh10
1 files changed, 4 insertions, 6 deletions
diff --git a/include/qpdf/InputSource.hh b/include/qpdf/InputSource.hh
index 22e3abcd..02254bb3 100644
--- a/include/qpdf/InputSource.hh
+++ b/include/qpdf/InputSource.hh
@@ -85,14 +85,12 @@ class QPDF_DLL_CLASS InputSource
virtual size_t read(char* buffer, size_t length) = 0;
// Note: you can only unread the character you just read. The
- // specific character is ignored by some implementations. unreadCh
- // will be removed from the API in qpdf 11.
+ // specific character is ignored by some implementations, and the
+ // implementation doesn't check this. Use of unreadCh is
+ // semantically equivalent to seek(-1, SEEK_CUR) but is much more
+ // efficient.
virtual void unreadCh(char ch) = 0;
- // ABI: delete unreadCh, and direct people to seek backward by 1
- // character instead.
- // virtual void unreadCh(char ch) final = delete;
-
protected:
qpdf_offset_t last_offset;