tex: allow zero line number in ex command address - neatvi - [fork] simple vi-type editor with UTF-8 support
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       ---
 (DIR) commit 8f0e940847db6c262e9159d00b2301aef0a1bc58
 (DIR) parent 077506cd41e5d2770d3314e4b8b4f1ebd402948e
 (HTM) Author: Yasuhiro Matsumoto <mattn.jp@gmail.com>
       Date:   Mon,  4 Oct 2021 00:22:03 +0900
       
       ex: allow zero line number in ex command address
       
       Diffstat:
         M ex.c                                |       2 ++
       
       1 file changed, 2 insertions(+), 0 deletions(-)
       ---
 (DIR) diff --git a/ex.c b/ex.c
       t@@ -264,6 +264,8 @@ static int ex_region(char *loc, int *beg, int *end)
                                xrow = *end - 1;
                        loc++;
                }
       +        if (*beg < 0 && *end == 0)
       +                *beg = 0;
                if (*beg < 0 || *beg >= lbuf_len(xb))
                        return 1;
                if (*end < *beg || *end > lbuf_len(xb))