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This feature allows the user to limit the number of words returned by a call to wordsplit. When the number of words in expansion reaches the predefined limit, the rest of input line will be expanded and returned as a single last word. For example, to parse a /etc/passwd line: struct wordsplit ws; ws.ws_delim = ":"; ws.ws_maxwords = 7; ws.ws_options = WRDSO_MAXWORDS; wordsplit(str, &ws, WRDSF_NOVAR | WRDSF_NOCMD | WRDSF_DELIM | WRDSF_OPTIONS); * doc/wordsplit.3: Document the maxwords feature. * include/wordsplit.h (wordsplit) <ws_maxwords> <ws_wordi>: New members. (WRDSO_MAXWORDS): New option. * src/wordsplit.c (WSP_RETURN_DELIMS): New macro. (_wsplt_subsplit): Rewrite. (wordsplit_init0): Don't reset node list. (wordsplit_init): Initialize ws_wordi and the node list. (wsnode_insert): Correctly insert lists. (coalesce_segment): Additional safety check. (wsnode_tail_coalesce): New static function. (wordsplit_finish): Postprocess delimiters. (expvar,expcmd): Use new _wsplt_subsplit. (wordsplit_varexp): Don't try to expand delimiter nodes. (skip_delim): Remove delimiter processing. It is now done in wordsplit_finish. (scan_word): New argument 'consume_all' instructs it to consume the rest of input as one token. (wordsplit_process_list): Handle wsp->ws_maxwords setting. This also fixed a long-standing bug: quotes weren't processed in WRDSF_NOSPLIT mode. See the testcase 59 (incremental nosplit). (wordsplit_run): Rewrite. (wordsplit_free): Free node list. * tests/wordsplit.at: Update for the new wsp output format. (incremental nosplit): Expect correct output. Add tests for the maxwords feature. * tests/wsp.c (maxwords): New flag. Print the ws_wordi value as "TOTALS" at the end of each run. |
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