From eb0599c11c97b4ce2d37fa25f8fbb003e5696e71 Mon Sep 17 00:00:00 2001 From: Kyotaro Horiguchi Date: Tue, 27 Nov 2018 14:57:46 +0900 Subject: [PATCH 1/3] Tab-copletion debug log With this patch, psql built with TABCOMPLETION_DEBUG defined emits tab-completion debug log into the file specified -L option. --- src/bin/psql/tab-complete.c | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) diff --git a/src/bin/psql/tab-complete.c b/src/bin/psql/tab-complete.c index 7993c05283..747587030b 100644 --- a/src/bin/psql/tab-complete.c +++ b/src/bin/psql/tab-complete.c @@ -60,6 +60,44 @@ extern char *filename_completion_function(); #define completion_matches rl_completion_matches #endif +/* + * By enabling the following definition every completion attempt emits a log + * line into the log file if any. Every log line consists of the source line + * number where it is made, completion context and the completion result. + */ +#ifdef TABCOMPLETION_DEBUG +#ifdef HAVE_RL_COMPLETION_MATCHES +#define org_completion_matches rl_completion_matches +#else +#define org_completion_matches completion_matches +#endif + +#undef completion_matches +#define completion_matches(t, f) completion_debug(__LINE__, (t), (f)) + +static char **completion_debug(int line, + const char *text, rl_compentry_func_t *func) +{ + char **list = org_completion_matches(text, func); + + if (pset.logfile) + { + /* Emit completion log */ + + /* Enclose empty list with brackets since it is an intermediate state + * which is immediately followed by a non-empty list. + */ + fprintf(pset.logfile, "%s:%d:%s\"%s\" -> (", __FILE__, line, list ? "" : "[", text); + for (int i = 0; list && list[i]; ++i) + fprintf(pset.logfile, "%s\"%s\"", i ? ", " : "", list[i]); + fprintf(pset.logfile, ")%s\n", list ? "": "]"); + fflush(pset.logfile); + } + + return list; +} +#endif + /* word break characters */ #define WORD_BREAKS "\t\n@$><=;|&{() " -- 2.16.3