From 321d39d1b0b5e3f541847788641246b8724cd4da Mon Sep 17 00:00:00 2001 From: Ingo Schwarze Date: Sat, 30 Apr 2022 11:32:42 +0000 Subject: Refactor the handler function roff_block_sub() for clarity and simplicity. 1. Do not needlessly access the function pointer table roffs[]. Instead, simply call the block closing function directly. 2. Sort code: handle both cases of block closing at the beginning of the function rather than one at the beginning and one at the end. 3. Trim excessive, partially repetitive and obvious comments, also making the comments considerably more precise. No functional change. --- roff.c | 27 ++++++++++----------------- 1 file changed, 10 insertions(+), 17 deletions(-) diff --git a/roff.c b/roff.c index 7bed9429..ca45b0f6 100644 --- a/roff.c +++ b/roff.c @@ -1,4 +1,4 @@ -/* $Id: roff.c,v 1.384 2022/04/28 16:21:10 schwarze Exp $ */ +/* $Id: roff.c,v 1.385 2022/04/30 11:32:42 schwarze Exp $ */ /* * Copyright (c) 2010-2015, 2017-2022 Ingo Schwarze * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons @@ -2276,12 +2276,8 @@ roff_block_sub(ROFF_ARGS) int i, j; /* - * First check whether a custom macro exists at this level. If - * it does, then check against it. This is some of groff's - * stranger behaviours. If we encountered a custom end-scope - * tag and that tag also happens to be a "real" macro, then we - * need to try interpreting it again as a real macro. If it's - * not, then return ignore. Else continue. + * If a custom end marker is a user-defined or predefined macro + * or a request, interpret it. */ if (r->last->end) { @@ -2307,20 +2303,17 @@ roff_block_sub(ROFF_ARGS) } } - /* - * If we have no custom end-query or lookup failed, then try - * pulling it out of the hashtable. - */ + /* Handle the standard end marker. */ t = roff_parse(r, buf->buf, &pos, ln, ppos); + if (t == ROFF_cblock) + return roff_cblock(r, t, buf, ln, ppos, pos, offs); - if (t != ROFF_cblock) { - if (tok != ROFF_ig) - roff_setstr(r, r->last->name, buf->buf + ppos, 2); - return ROFF_IGN; - } + /* Not an end marker, so append the line to the block. */ - return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs); + if (tok != ROFF_ig) + roff_setstr(r, r->last->name, buf->buf + ppos, 2); + return ROFF_IGN; } static int -- cgit v1.2.3-56-ge451