patch 9.1.1300: wrong detection of -inf

Commit: 
https://github.com/vim/vim/commit/10f69298b4577b3712eedeb49b4d9ad1a69111f8
Author: John Marriott <basil...@internode.on.net>
Date:   Mon Apr 14 21:19:34 2025 +0200

    patch 9.1.1300: wrong detection of -inf
    
    Problem:  wrong detection of -inf
    Solution: correctly compare 4 characters and not 3
              (John Marriott)
    
    closes: #17109
    
    Signed-off-by: John Marriott <basil...@internode.on.net>
    Signed-off-by: Christian Brabandt <c...@256bit.org>

diff --git a/src/float.c b/src/float.c
index 9e8074de8..4c8e5fe10 100644
--- a/src/float.c
+++ b/src/float.c
@@ -41,7 +41,7 @@ string2float(
        *value = INFINITY;
        return 3;
     }
-    if (STRNICMP(text, "-inf", 3) == 0)
+    if (STRNICMP(text, "-inf", 4) == 0)
     {
        *value = -INFINITY;
        return 4;
diff --git a/src/testdir/test_viminfo.vim b/src/testdir/test_viminfo.vim
index 7aab27133..2bbca3e5d 100644
--- a/src/testdir/test_viminfo.vim
+++ b/src/testdir/test_viminfo.vim
@@ -1329,4 +1329,30 @@ func Test_viminfo_oldfiles_filter()
   let &viminfofile = _viminfofile
 endfunc
 
+func Test_viminfo_global_var()
+  let _viminfofile = &viminfofile
+  let _viminfo = &viminfo
+  let &viminfofile=''
+  set viminfo+=!
+  let lines = [
+    \ '# comment line',
+    \ "",
+    \ '# Viminfo version',
+    \ '|1,4',
+    \ "",
+    \ '*encoding=utf-8',
+    \ "",
+    \ '# global variables:',
+    \ "!VAL    FLO     -in",
+    \ "!VAR    FLO     -inf",
+    \ "",
+    \ ]
+  call writefile(lines, 'Xviminfo2', 'D')
+  rviminfo! Xviminfo2
+  call assert_equal(0.0, g:VAL)
+  call assert_equal(str2float("-inf"), g:VAR)
+  let &viminfofile = _viminfofile
+  let &viminfo = _viminfo
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/version.c b/src/version.c
index e4a0b0ed1..0a5b4ecf5 100644
--- a/src/version.c
+++ b/src/version.c
@@ -704,6 +704,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1300,
 /**/
     1299,
 /**/

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