patch 7.4.1857
Problem: When a channel appends to a buffer that is 'nomodifiable' there is
an error but appending is done anyway.
Solution: Add the 'modifiable' option. Refuse to write to a 'nomodifiable'
when the value is 1.
diff --git a/src/structs.h b/src/structs.h
index 12a8a43..d5f8adc 100644
--- a/src/structs.h
+++ b/src/structs.h
@@ -1401,6 +1401,8 @@
partial_T *ch_partial;
buf_T *ch_buffer; /* buffer to read from or write to */
+ int ch_nomodifiable; /* TRUE when buffer can be 'nomodifiable' */
+ int ch_nomod_error; /* TRUE when e_modifiable was given */
int ch_buf_append; /* write appended lines instead top-bot */
linenr_T ch_buf_top; /* next line to send */
linenr_T ch_buf_bot; /* last line to send */
@@ -1477,6 +1479,8 @@
#define JO_IN_BUF 0x4000000 /* "in_buf" (JO_OUT_BUF << 2) */
#define JO_CHANNEL 0x8000000 /* "channel" */
#define JO_BLOCK_WRITE 0x10000000 /* "block_write" */
+#define JO_OUT_MODIFIABLE 0x20000000 /* "out_modifiable" */
+#define JO_ERR_MODIFIABLE 0x40000000 /* "err_modifiable" (JO_OUT_ << 1) */
#define JO_ALL 0x7fffffff
#define JO_MODE_ALL (JO_MODE + JO_IN_MODE + JO_OUT_MODE + JO_ERR_MODE)
@@ -1500,6 +1504,7 @@
char_u jo_io_name_buf[4][NUMBUFLEN];
char_u *jo_io_name[4]; /* not allocated! */
int jo_io_buf[4];
+ int jo_modifiable[4];
channel_T *jo_channel;
linenr_T jo_in_top;