drop support on otp 19

Author: DavidAlphaFox

Makefile

@@ -1,10 +1,10 @@
 PROJECT = aihtml
 PROJECT_DESCRIPTION = html tool for productions from ailink.io
-PROJECT_VERSION = 0.1.7
+PROJECT_VERSION = 0.1.8
 
 ERLC_OPTS = -Werror +debug_info +warn_export_vars +warn_shadow_vars +warn_obsolete_guard
 DEPS = ailib
 
-dep_ailib = git https://github.com/DavidAlphaFox/ailib.git tag-0.2.0
+dep_ailib = git https://github.com/DavidAlphaFox/ailib.git tag-0.2.7
 
 include erlang.mk 

src/ai_mustache_loader.erl

@@ -256,7 +256,7 @@ remove_suffix(Name,Suffix)->
 has_suffix(Name,Suffix)->
     if 
         erlang:byte_size(Suffix) > 0 -> 
-            case ai_string:find(Name,Suffix,trailing) of 
+            case string:find(Name,Suffix,trailing) of 
                 nomatch -> false;
                 _ -> true 
             end;
@@ -375,9 +375,9 @@ prepare_loader(ViewPath,Suffix)->
                                         false -> Acc;
                                         _->
                                             %% 找非子模板                 
-                                            case ai_string:find(I,<<"_">>,leading) of 
+                                            case string:find(I,<<"_">>,leading) of 
                                                 nomatch ->
-                                                    T0 = ai_string:prefix(I,Prefix),
+                                                    T0 = string:prefix(I,Prefix),
                                                     T1 = remove_suffix(T0,Suffix),
                                                     [T1|Acc];
                                                 _ -> Acc 

src/ai_mustache_runner.erl

@@ -70,4 +70,6 @@ run(_SectionIR,Acc,[],[{IR,OldCtx}|Stack],Partials,_Ctx)->
      run(IR,Acc,Stack,Partials,OldCtx);
 run(SectionIR,Acc,[H|T],Stack,Partials,Ctx)->
      Acc0 = run(SectionIR,Acc,[],Partials,maps:merge(Ctx,H)),
-     run(SectionIR,Acc0,T,Stack,Partials,Ctx).
+     run(SectionIR,Acc0,T,Stack,Partials,Ctx).
+
+