Add -j / --join-output option, similar to -r

Fix jqlang#215.

docs/content/3.manual/manual.yml

@@ -152,6 +152,10 @@ sections:
  formatted as a JSON string with quotes. This can be useful for
  making jq filters talk to non-JSON-based systems.
 
+ * `--join-output` / `-j`:
+
+ Like `-r` but jq won't print a newline after each output.
+
  * `-f filename` / `--from-file filename`:
 
  Read filter from the file rather than from a command line, like

jq.1.prebuilt

@@ -109,6 +109,12 @@ Output the fields of each object with the keys in sorted order\.
 With this option, if the filter\'s result is a string then it will be written directly to standard output rather than being formatted as a JSON string with quotes\. This can be useful for making jq filters talk to non\-JSON\-based systems\.
 .
 .IP "\(bu" 4
+\fB\-\-join\-output\fR / \fB\-j\fR:
+.
+.IP
+Like \fB\-r\fR but jq won\'t print a newline after each output\.
+.
+.IP "\(bu" 4
 \fB\-f filename\fR / \fB\-\-from\-file filename\fR:
 .
 .IP
@@ -1937,7 +1943,7 @@ jq \'\.foo += 1\'
 .IP "" 0
 .
 .SS "Complex assignments"
-Lots more things are allowed on the left\-hand side of a jq assignment than in most langauges\. We\'ve already seen simple field accesses on the left hand side, and it\'s no surprise that array accesses work just as well:
+Lots more things are allowed on the left\-hand side of a jq assignment than in most languages\. We\'ve already seen simple field accesses on the left hand side, and it\'s no surprise that array accesses work just as well:
 .
 .IP "" 4
 .

main.c

@@ -75,6 +75,8 @@ enum {
 
  FROM_FILE = 512,
 
+ RAW_NO_LF = 1024,
+
  EXIT_STATUS = 8192,
 
  /* debugging only */
@@ -111,7 +113,8 @@ static int process(jq_state *jq, jv value, int flags) {
  ret = 0;
  jv_dump(result, dumpopts);
  }
- printf("\n");
+ if (!(options & RAW_NO_LF))
+ printf("\n");
  if (options & UNBUFFERED_OUTPUT)
  fflush(stdout);
  }
@@ -205,6 +208,8 @@ int main(int argc, char* argv[]) {
  options |= PROVIDE_NULL;
  } else if (isoption(argv[i], 'f', "from-file")) {
  options |= FROM_FILE;
+ } else if (isoption(argv[i], 'j', "join-output")) {
+ options |= RAW_OUTPUT | RAW_NO_LF;
  } else if (isoption(argv[i], 'e', "exit-status")) {
  options |= EXIT_STATUS;
  } else if (isoption(argv[i], 0, "arg")) {