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patch 8.2.1968: Vim9: has() assumes a feature does not change dynamically

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Problem:    Vim9: has() assumes a feature does not change dynamically.
Solution:   Check whether a feature may change dynamically. (closes #7265)
This commit is contained in:
Bram Moolenaar
2020-11-08 12:49:47 +01:00
parent 59d8e56e04
commit 8cebd43e97
5 changed files with 141 additions and 1 deletions
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67
src/evalfunc.c
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@@ -5483,6 +5483,73 @@ f_has(typval_T *argvars, typval_T *rettv)
rettv->vval.v_number = n;
}
/*
* Return TRUE if "feature" can change later.
* Also when checking for the feature has side effects, such as loading a DLL.
*/
int
dynamic_feature(char_u *feature)
{
return (feature == NULL
#if defined(FEAT_BEVAL) && defined(FEAT_GUI_MSWIN)
|| STRICMP(feature, "balloon_multiline") == 0
#endif
#if defined(FEAT_GUI) && defined(FEAT_BROWSE)
|| (STRICMP(feature, "browse") == 0 && !gui.in_use)
#endif
#ifdef VIMDLL
|| STRICMP(feature, "filterpipe") == 0
#endif
#if defined(FEAT_GUI) && !defined(ALWAYS_USE_GUI)
// this can only change on Unix where the ":gui" command could be
// used.
|| (STRICMP(feature, "gui_running") == 0 && !gui.in_use)
#endif
#if defined(USE_ICONV) && defined(DYNAMIC_ICONV)
|| STRICMP(feature, "iconv") == 0
#endif
#ifdef DYNAMIC_LUA
|| STRICMP(feature, "lua") == 0
#endif
#ifdef FEAT_MOUSE_GPM
|| (STRICMP(feature, "mouse_gpm_enabled") == 0 && !gpm_enabled())
#endif
#ifdef DYNAMIC_MZSCHEME
|| STRICMP(feature, "mzscheme") == 0
#endif
#ifdef FEAT_NETBEANS_INTG
|| STRICMP(feature, "netbeans_enabled") == 0
#endif
#ifdef DYNAMIC_PERL
|| STRICMP(feature, "perl") == 0
#endif
#ifdef DYNAMIC_PYTHON
|| STRICMP(feature, "python") == 0
#endif
#ifdef DYNAMIC_PYTHON3
|| STRICMP(feature, "python3") == 0
#endif
#if defined(DYNAMIC_PYTHON) || defined(DYNAMIC_PYTHON3)
|| STRICMP(feature, "pythonx") == 0
#endif
#ifdef DYNAMIC_RUBY
|| STRICMP(feature, "ruby") == 0
#endif
#ifdef FEAT_SYN_HL
|| STRICMP(feature, "syntax_items") == 0
#endif
#ifdef DYNAMIC_TCL
|| STRICMP(feature, "tcl") == 0
#endif
// once "starting" is zero it will stay that way
|| (STRICMP(feature, "vim_starting") == 0 && starting != 0)
|| STRICMP(feature, "multi_byte_encoding") == 0
#if defined(FEAT_TERMINAL) && defined(MSWIN)
|| STRICMP(feature, "conpty") == 0
#endif
);
}
/*
* "haslocaldir()" function
*/